NYS Pesticide Commercial Operator (PCO) Certification Exam — Questions and Answers

Question 1: Under NYS regulations, pesticide application records must be retained for a minimum of how many years?

5 years
1 year
7 years
3 years (Correct answer)

Correct answer: 3 years

NYS DEC requires pesticide application records to be kept for a minimum of 3 years.

Question 2: Which of the following is the BEST definition of Integrated Pest Management (IPM)?

Applying pesticides on a fixed monthly schedule
Rotating between two pesticide brands to prevent resistance
Using only organic pesticides in sensitive accounts
Combining monitoring, prevention, and multiple control tactics, using pesticides only when needed (Correct answer)

Correct answer: Combining monitoring, prevention, and multiple control tactics, using pesticides only when needed

IPM combines inspection, monitoring, sanitation, exclusion, and targeted treatments, reserving pesticides for when thresholds justify them.

Question 3: Which application technique is most appropriate for treating ant trails along a baseboard?

Space fog treatment
Directed residual spot or band treatment along the trail pathway (Correct answer)
Soil injection
Broadcast spray of the entire room

Correct answer: Directed residual spot or band treatment along the trail pathway

A directed residual treatment along ant trails places the pesticide exactly where ants will contact it, providing efficient control with minimal off-target exposure.

Question 4: What class of pesticide requires a Special Registration or Restricted Use classification in New York?

All pesticides sold in stores
Only herbicides
Products with a CAUTION signal word only
Products with high acute toxicity or environmental hazard (Correct answer)

Correct answer: Products with high acute toxicity or environmental hazard

Restricted Use Pesticides (RUPs) are classified due to high acute toxicity or significant environmental risk and may only be purchased and used by certified applicators.

Question 5: Carpenter bees differ from bumblebees primarily by having:

A longer stinger
A shiny, hairless abdomen (Correct answer)
Smaller size
A fuzzy, banded abdomen

Correct answer: A shiny, hairless abdomen

Carpenter bees have a smooth, shiny black abdomen while bumblebees have a fuzzy, yellow-and-black banded abdomen.

Question 6: Heat-related illness risk increases when PCOs wear full PPE because:

PPE absorbs UV radiation
Pesticides raise body temperature
PPE restricts evaporative cooling and traps body heat (Correct answer)
PPE causes dehydration directly

Correct answer: PPE restricts evaporative cooling and traps body heat

Chemical-resistant suits and respirators impede sweat evaporation, significantly raising the risk of heat stress during warm-weather applications.

Question 7: A certified pesticide applicator in NY who supervises commercial applications must hold certification in the appropriate:

Category and subcategory (e.g., 7A for structural pest control) (Correct answer)
Any category regardless of pest type
Only a general applicator license
Federal FIFRA certification only

Correct answer: Category and subcategory (e.g., 7A for structural pest control)

NY certified applicators must hold the specific category and subcategory matching the pest and site type; structural PCO work falls under Category 7A.

Question 8: Which statement about restricted-use pesticides in New York is correct?

They may be sold to any adult with photo identification
They are banned entirely in New York State
They may only be purchased and applied by certified applicators or persons under their direct supervision (Correct answer)
They may be applied by anyone if used indoors

Correct answer: They may only be purchased and applied by certified applicators or persons under their direct supervision

Restricted-use products require certification because they pose greater risks to people or the environment.

Question 9: In an IPM program, the 'action threshold' refers to:

The number of traps required per 1,000 sq ft
The legal pesticide application rate on the label
The point at which pest activity becomes visible to humans
The pest population level at which control measures are economically or aesthetically justified (Correct answer)

Correct answer: The pest population level at which control measures are economically or aesthetically justified

The action threshold is the pest density at which intervention becomes necessary to prevent unacceptable damage or health risk, guiding treatment decisions.

Question 10: When applying pesticides in a food-handling establishment, which area requires the most careful attention to avoid contamination?

Parking lots
Food preparation surfaces, utensils, and open food containers (Correct answer)
Office areas
Employee break rooms

Correct answer: Food preparation surfaces, utensils, and open food containers

Food preparation surfaces and open food containers can become contaminated during pesticide applications, creating serious health risks for consumers.

Question 11: A small liquid pesticide spill occurs on a concrete floor. What is the correct response sequence?

Control the spill, contain it, then clean it up with absorbent material (Correct answer)
Cover it with a tarp and finish the job first
Evacuate the county and call the fire department
Hose the spill into the nearest floor drain

Correct answer: Control the spill, contain it, then clean it up with absorbent material

The 'three Cs' — control, contain, clean up — prevent the spill from spreading or reaching drains and waterways.

Question 12: In the series 3, 7, 15, 31, 63, ... what number comes next?

125
126
95
127 (Correct answer)

Correct answer: 127

Each term is doubled and increased by one, so 63 × 2 + 1 = 127.

Question 13: Which of the following best describes an IPM 'preventive' control measure for rodents?

Placing bait stations after rodents are detected
Sealing gaps larger than ¼ inch with rodent-proof materials before infestation occurs (Correct answer)
Setting snap traps as a first response
Applying repellent sprays monthly

Correct answer: Sealing gaps larger than ¼ inch with rodent-proof materials before infestation occurs

Preventive exclusion — sealing entry gaps to ¼ inch or less — is the most durable rodent IPM tactic and stops infestations before they start.

Question 14: A technician finds a pesticide label that conflicts with a supervisor's verbal instructions. What must the technician do?

Follow the supervisor, because supervisors carry legal responsibility
Split the difference by reducing the rate
Call the manufacturer before doing anything
Follow the label, because the label is the law (Correct answer)

Correct answer: Follow the label, because the label is the law

Using a pesticide in a manner inconsistent with its label is a violation of both federal and state law.

Question 15: Under the NYS Neighbor Notification Law, registered pesticide businesses must maintain a registry of neighbors who request prior notification of outdoor applications. Notification must be given at least:

No specific timeframe is required
24 hours before outdoor application (Correct answer)
48 hours before application
1 hour before application

Correct answer: 24 hours before outdoor application

The NYS Neighbor Notification Law requires at least 24 hours notice to registered neighbors before outdoor pesticide applications.

Question 16: Before entering a pesticide-treated area, a PCO should verify that the:

Wind speed exceeds 10 mph
Label has been discarded
Re-entry interval (REI) has elapsed (Correct answer)
Temperature is above 90°F

Correct answer: Re-entry interval (REI) has elapsed

The re-entry interval must have elapsed to ensure residues have dropped to safe levels before re-entry.

Question 17: When disposing of empty pesticide containers in New York State, the required procedure is to:

Incinerate on-site
Return all containers to the manufacturer
Triple-rinse and puncture or crush before disposal (Correct answer)
Rinse once and place in regular trash

Correct answer: Triple-rinse and puncture or crush before disposal

NYS DEC requires triple-rinsing empty containers and rendering them unusable before disposal to prevent pesticide residue contamination.

Question 18: If a person you are speaking with wants to vent about a situation by talking it out before moving on to useful dialogue. <br> It is essential to:

Offer the person suggestions on how to calm down
Politely excuse yourself, but do not explain the reason
Point out the person that the current behavior is unproductive
Recognize that this is an important part of moving past the emotion and allow them to express their feelings. (Correct answer)

Correct answer: Recognize that this is an important part of moving past the emotion and allow them to express their feelings.

When someone needs to vent, it's crucial to allow them to express their emotions without interruption or immediate problem-solving. This process helps them release tension and process their feelings, making them more receptive to constructive dialogue afterward. Interrupting or offering unsolicited advice can invalidate their feelings and hinder effective communication.

Question 19: The use of pheromone traps in an IPM program primarily serves to:

Repel pests from sensitive areas
Replace all chemical treatments
Kill all insects in the treated area
Monitor pest populations and determine if action thresholds are met (Correct answer)

Correct answer: Monitor pest populations and determine if action thresholds are met

Pheromone traps capture insects to detect presence, estimate populations, and guide treatment timing decisions rather than acting as a mass kill device.

Question 20: The purpose of agitation in a pesticide spray tank is to:

Keep the formulation uniformly suspended and mixed throughout the application (Correct answer)
Remove air bubbles from the spray line
Increase pump pressure
Cool the spray solution during hot weather

Correct answer: Keep the formulation uniformly suspended and mixed throughout the application

Continuous agitation prevents wettable powders, flowables, and emulsifiable concentrates from settling or separating, ensuring a consistent concentration in every spray pass.

Question 21: What is the foundation principle of Integrated Pest Management (IPM)?

Applying pesticides on a fixed calendar schedule
Using only biological control agents
Eliminating all pests immediately upon detection
Using a combination of methods to manage pests with minimum environmental and health risk (Correct answer)

Correct answer: Using a combination of methods to manage pests with minimum environmental and health risk

IPM is based on combining biological, cultural, physical, and chemical controls to manage pests at acceptable levels while minimizing risks.

Question 22: Which piece of personal protective equipment (PPE) is MOST critical when applying organophosphate pesticides?

Cotton work gloves
Latex examination gloves
Leather gloves
Chemical-resistant gloves (Correct answer)

Correct answer: Chemical-resistant gloves

Chemical-resistant gloves are essential when handling organophosphates because they prevent dermal absorption of these highly toxic compounds.

Question 23: Which PPE component protects a PCO from dermal pesticide exposure when working with liquid concentrates?

Cotton coverall
Wool jacket
Chemical-resistant apron (Correct answer)
Reflective vest

Correct answer: Chemical-resistant apron

A chemical-resistant apron creates a physical barrier against splashes and spills of liquid pesticide concentrates.

Question 24: Dermal absorption is a concern with pesticides primarily because:

Pesticides only harm skin on contact
Absorption through skin is slower than ingestion
Only organics can penetrate skin
Skin can absorb certain pesticides directly into the bloodstream (Correct answer)

Correct answer: Skin can absorb certain pesticides directly into the bloodstream

Many pesticides, especially organophosphates and carbamates, can penetrate intact skin and enter the bloodstream, causing systemic toxicity.

Question 25: Which stored product pest creates silken webbing inside grain and flour containers?

Grain weevil
Sawtoothed grain beetle
Drugstore beetle
Indian meal moth (Plodia interpunctella) (Correct answer)

Correct answer: Indian meal moth (Plodia interpunctella)

Indian meal moth larvae spin silken webbing in infested food products, which is a key identification sign of this common pantry pest.

Question 26: Which of the following best describes 'direct supervision' of an uncertified pesticide technician in New York?

Supervision is only required for aerial applications
The supervisor watches every application in person at all times, no exceptions
A certified applicator is available and responsible, with contact possible when needed as the label and regulations require (Correct answer)
The technician works alone as long as the supervisor reviews records weekly

Correct answer: A certified applicator is available and responsible, with contact possible when needed as the label and regulations require

Direct supervision means the certified applicator remains responsible and available consistent with label and regulatory requirements, not necessarily physically present for every task.

Question 27: I wanted to 1 you that I have faced some problems when using the client database. Just one of my previous five questions 2 accurate. <br> Which of the following should go in position one the most?

Advise (Correct answer)
Note
Advice
Instruct

Correct answer: Advise

The word 'advise' (verb) means to offer suggestions or recommendations, or to inform someone of something. In this context, the speaker is informing the recipient about problems and potentially offering a suggestion or warning, making 'advise' the grammatically correct and most appropriate choice. 'Advice' is a noun, while 'instruct' implies giving orders, and 'note' is too informal.

Question 28: What is the purpose of calibrating a pesticide application equipment before use?

To ensure the correct amount of pesticide is delivered per unit area (Correct answer)
To reduce the need for PPE
To increase the speed of application
To make the sprayer look newer

Correct answer: To ensure the correct amount of pesticide is delivered per unit area

Calibration ensures that the equipment delivers the label-required rate, preventing under-treatment (poor control) or over-treatment (illegal and potentially hazardous).

Question 29: In New York State, which document must a PCO consult before making any pesticide application?

A trade association newsletter
The pesticide label, which is a legally binding document (Correct answer)
The Material Safety Data Sheet only
The manufacturer's website

Correct answer: The pesticide label, which is a legally binding document

Under FIFRA and NYS law, the pesticide label is a legal document and applicators are required to follow all label directions.

Question 30: What effect does increasing spray pressure have on nozzle output and droplet size?

Decreases output and increases droplet size
Has no effect on droplet size
Increases output and decreases droplet size, producing finer droplets more prone to drift (Correct answer)
Increases both output and droplet size equally

Correct answer: Increases output and decreases droplet size, producing finer droplets more prone to drift

Higher pressure forces more liquid through the orifice (increased GPM) and shatters the liquid into smaller droplets, increasing drift risk.

Question 31: All policy analysts in the bureau are required to file disclosure forms. Dana works in the bureau but has not filed a disclosure form. What can be validly concluded?

If Dana is a policy analyst, Dana is out of compliance (Correct answer)
Dana does not work in the bureau
Dana filed the form late
Dana is definitely a policy analyst

Correct answer: If Dana is a policy analyst, Dana is out of compliance

The rule applies only to policy analysts, so a violation can be concluded only if Dana holds that title.

Question 32: It has two lever arms attached at a pivot, similar to scissors or pliers.

Inclined plane
Pair of levers (Correct answer)
Lever
Fulcrum/pivot

Correct answer: Pair of levers

Scissors and pliers are classic examples of compound machines that function as a 'pair of levers.' Each blade or jaw acts as an individual lever arm, and they are joined at a common pivot point, or fulcrum. This arrangement allows for the effective application of force to cut, grip, or manipulate objects.

Question 33: NYS requires recertification credits (continuing education) for certified applicators on a cycle of every:

5 years
1 year
3 years (Correct answer)
2 years

Correct answer: 3 years

NYS DEC requires certified commercial applicators to complete the required recertification credits during each 3-year certification period.

Question 34: Exclusion, as an IPM strategy, involves:

Using traps to capture and remove pests
Sealing entry points to prevent pest access to a structure (Correct answer)
Applying pesticides along the perimeter
Removing food and water sources

Correct answer: Sealing entry points to prevent pest access to a structure

Exclusion uses physical barriers — caulking, door sweeps, screens, mesh — to prevent pests from entering a structure.

Question 35: In the IPM hierarchy, pesticides are considered:

Prohibited in true IPM programs
The only reliable method for structural pests
A last resort used only when other methods are insufficient or impractical (Correct answer)
The first response to any pest sighting

Correct answer: A last resort used only when other methods are insufficient or impractical

IPM treats chemical pesticides as tools to be used when non-chemical strategies are insufficient, selecting the least-hazardous effective option.

Question 36: The best classification for Statement A is:

Symptom
Solution
Relationship
Cause (Correct answer)

Correct answer: Cause

Without the actual 'Statement A' provided in the question, it's impossible to give a specific explanation for why 'Cause' is the correct classification. However, if 'Cause' is the correct answer, it implies that Statement A describes an event, action, or condition that directly leads to or brings about another event or outcome. It would be the initiating factor in a sequence of events.

Question 37: Under NYS law, a Pesticide Business Registration must be renewed every:

2 years
1 year
5 years
3 years (Correct answer)

Correct answer: 3 years

NYS pesticide business registrations are renewed on a 3-year cycle with the DEC.

Question 38: Which IPM concept describes the idea that some level of pests may be tolerable without requiring treatment?

Pesticide resistance index
Biological control success rate
Zero-tolerance policy
Tolerance threshold (or pest tolerance level) (Correct answer)

Correct answer: Tolerance threshold (or pest tolerance level)

The tolerance threshold recognizes that not every pest sighting requires treatment — control is only justified when pest levels exceed an economically or aesthetically acceptable level.

Question 39: A pesticide that controls pests only when they eat treated material is classified as which type?

Contact poison
Fumigant
Systemic repellent
Stomach poison (Correct answer)

Correct answer: Stomach poison

Stomach poisons must be ingested by the pest to be effective, as with many baits.

Question 40: A pressure regulator on a power sprayer maintains:

Consistent operating pressure at the nozzle regardless of engine speed variation (Correct answer)
The flow rate of the chemical concentrate pump
The chemical concentration in the tank
The temperature of the spray solution

Correct answer: Consistent operating pressure at the nozzle regardless of engine speed variation

Pressure regulators compensate for engine speed fluctuations and tank pressure changes to deliver consistent operating pressure at the nozzle.

Question 41: If a sprayer is applying too much pesticide per 1,000 sq ft, the PCO should:

Increase pump pressure to dilute the chemical
Add more water to the tank
Switch to a different chemical formulation
Increase walking speed, decrease pressure, or switch to a nozzle with lower output (Correct answer)

Correct answer: Increase walking speed, decrease pressure, or switch to a nozzle with lower output

Reducing output per area requires increasing walking speed, reducing nozzle pressure, or using a lower-output nozzle to bring the application rate into label compliance.

Question 42: A ULV (Ultra Low Volume) machine is used primarily for:

Foam applications in wall voids
Producing very fine aerosol droplets for space or fogging applications (Correct answer)
High-volume residual spraying of surfaces
Subsurface soil injection treatments

Correct answer: Producing very fine aerosol droplets for space or fogging applications

ULV machines produce extremely small droplets (< 50 microns) for airborne space treatments targeting flying insects in indoor or outdoor environments.

Question 43: Under New York's IPM requirements for schools, PCOs must prioritize which approach?

Monthly scheduled pesticide applications regardless of pest levels
Immediate chemical treatment to protect children from all pests
Non-chemical or least-toxic chemical methods first, with notification before pesticide use (Correct answer)
Only biological control methods, no chemical use allowed

Correct answer: Non-chemical or least-toxic chemical methods first, with notification before pesticide use

NY school IPM mandates a least-toxic, preventive approach with required pre-notification and documentation before any pesticide application.

Question 44: Which of the following is a veterans' benefit available on NYS civil service exams like the PCO?

Automatic appointment without taking the exam
Exemption from the education requirement
Additional credits added to a passing exam score (Correct answer)
A guaranteed interview at every agency

Correct answer: Additional credits added to a passing exam score

Qualifying veterans receive additional credits added to their passing score, improving their rank on the eligible list.

Question 45: The presence of mud tubes along a foundation is a primary sign of which pest?

Powderpost beetles
Subterranean termites (Correct answer)
Carpenter ants
Carpenter bees

Correct answer: Subterranean termites

Subterranean termites construct mud tubes to maintain moisture and protect themselves as they travel between the soil and wood structures.

Question 46: What does the signal word 'DANGER' on a pesticide label indicate?

Moderately toxic
Highly toxic — LD50 is very low (Correct answer)
Slightly toxic
Minimal hazard

Correct answer: Highly toxic — LD50 is very low

'DANGER' indicates a highly toxic product with a very low LD50, meaning even small amounts can cause death or serious injury.

Question 47: Pesticide labels are legally binding under which federal law?

FIFRA (Federal Insecticide, Fungicide, and Rodenticide Act) (Correct answer)
Toxic Substances Control Act
OSHA Hazard Communication Standard
Clean Water Act

Correct answer: FIFRA (Federal Insecticide, Fungicide, and Rodenticide Act)

FIFRA makes the pesticide label a legal document; using a product inconsistently with its label is a federal violation.

Question 48: A technician wants to spray a perimeter treatment but rain is forecast within the hour. What is the BEST decision?

Double the application rate so some product survives the rain
Postpone the application to avoid runoff and reduced effectiveness (Correct answer)
Apply as scheduled since the label was already read
Switch to a fogging application indoors instead

Correct answer: Postpone the application to avoid runoff and reduced effectiveness

Rain shortly after application can wash pesticide into non-target areas and waterways while destroying efficacy.

Question 49: When applying a pesticide in a crack and crevice treatment, where should the nozzle be directed?

Toward ceiling corners only
Onto all exposed surfaces
At the center of the room
Into cracks, crevices, and voids where pests hide (Correct answer)

Correct answer: Into cracks, crevices, and voids where pests hide

Crack and crevice treatments target the harborage areas where pests live and breed, maximizing efficacy while minimizing human exposure.

Question 50: Which of the following should be used as the paragraph's topic sentence?

Sentence B (Correct answer)
Sentence E
Sentence C
Sentence A

Correct answer: Sentence B

Without the actual sentences (A, B, C, E) provided in the question, it's impossible to explain why 'Sentence B' is the correct topic sentence. A topic sentence introduces the main idea of a paragraph, setting the stage for the supporting details that follow. It should be broad enough to encompass the paragraph's content but specific enough to convey its central theme.

Question 51: The Safety Data Sheet (SDS) Section 8 provides information on:

Physical and chemical properties
Accidental release measures
Regulatory information
Exposure controls and personal protective equipment (Correct answer)

Correct answer: Exposure controls and personal protective equipment

SDS Section 8 (Exposure Controls/Personal Protection) lists occupational exposure limits and required PPE for safe handling.

Question 52: Which respiratory protection is required when applying pesticides that produce fine aerosols in enclosed spaces?

Dust mask
Surgical mask
NIOSH-approved respirator with appropriate cartridges (Correct answer)
No respiratory protection needed

Correct answer: NIOSH-approved respirator with appropriate cartridges

NIOSH-approved respirators with the correct cartridges are required to protect against inhalation of aerosol droplets and vapors in enclosed spaces.

Question 53: When mixing pesticides, the correct order of addition to the spray tank is:

Fill tank halfway with water → add wettable powder or flowable → then remaining water (Correct answer)
Mix pesticide and water in a bucket → then add to tank
Fill with water completely → then add pesticide last
Add concentrated pesticide first → then water to full volume

Correct answer: Fill tank halfway with water → add wettable powder or flowable → then remaining water

Adding pesticide to a partially filled tank and filling with water while agitating prevents clumping and ensures proper suspension of the formulation.

Question 54: A PCO notices small, c-shaped white larvae in the soil near the roots of a lawn. These are most likely:

Earwig larvae
Millipedes
Wireworms
White grubs (scarab beetle larvae) (Correct answer)

Correct answer: White grubs (scarab beetle larvae)

C-shaped white grubs are the larval stage of scarab beetles (e.g., Japanese beetle, European chafer) and are common turf pests in New York.

Question 55: Frass (sawdust-like excrement) pushed from tiny holes in wood is characteristic of which wood-destroying insect?

Carpenter ants
Subterranean termites
Powderpost beetles (Correct answer)
Wood-boring wasps

Correct answer: Powderpost beetles

Powderpost beetles leave fine, flour-like frass pushed out of small round exit holes as evidence of active infestation.

Question 56: A wheel with teeth along its edge that engage with other gear wheels or other teeth to provide movement

Gearwheel (Correct answer)
Fulcrum Wheel
Lever
Inclined Wheel

Correct answer: Gearwheel

A gearwheel, commonly known as a gear, is a rotating machine part specifically designed with cut teeth along its edge. These teeth mesh with those of another toothed part to transmit torque, change speed, or alter the direction of movement. This definition precisely describes its function and structure within mechanical systems.

Question 57: The 'pesticide treadmill' in pest management describes:

The escalating cost of pesticide products
Calendar-based application schedules
The process of rotating pesticide classes to prevent resistance
Over-reliance on chemicals that leads to resistance, requiring ever-stronger products (Correct answer)

Correct answer: Over-reliance on chemicals that leads to resistance, requiring ever-stronger products

The pesticide treadmill occurs when repeated use of the same chemistry selects for resistant populations, requiring higher doses or different products in a cycle.

Question 58: The presence of shed skins (exuviae) and live insects in wall voids or along baseboards most likely indicates:

German cockroach infestation (Correct answer)
Termite activity
Silverfish activity
Flea infestation

Correct answer: German cockroach infestation

German cockroaches shed their skins (nymphal exuviae) multiple times during development, and finding shed skins alongside live insects in harborage areas is a classic sign.

Question 59: Which piece of information must an applicator provide to a physician or poison control center in a pesticide poisoning emergency?

The company's annual pesticide purchase totals
The product label, including the active ingredient and EPA registration number (Correct answer)
The name of the pesticide distributor
The applicator's certification exam score

Correct answer: The product label, including the active ingredient and EPA registration number

The label identifies the active ingredient and first aid statements doctors need to select the correct treatment.

Question 60: After using a sprayer for a pesticide application, triple rinsing the equipment involves:

Adding water, agitating, spraying through the nozzle, and repeating three times (Correct answer)
Rinsing the outside of the tank with a hose three times
Running three gallons of water through the pump
Disassembling and hand-washing each part three times

Correct answer: Adding water, agitating, spraying through the nozzle, and repeating three times

Triple rinsing — filling with water, circulating through the system, spraying out, and repeating three times — removes pesticide residues from tank, hoses, and nozzles.

Question 61: Which federal agency holds authority over pesticide product registration in the United States, including products used by NY PCOs?

Food and Drug Administration (FDA)
U.S. Department of Agriculture (USDA)
Occupational Safety and Health Administration (OSHA)
U.S. Environmental Protection Agency (EPA) (Correct answer)

Correct answer: U.S. Environmental Protection Agency (EPA)

The U.S. EPA registers all pesticide products under FIFRA and sets national standards that state programs like NY's must meet or exceed.

Question 62: The NYS DEC 'right-of-entry' doctrine in pesticide enforcement means that inspectors:

Must obtain a court order to inspect pesticide records
Can only inspect with 48-hour advance notice
May enter registered pesticide business premises during normal business hours without a warrant (Correct answer)
Are prohibited from unannounced inspections

Correct answer: May enter registered pesticide business premises during normal business hours without a warrant

Under ECL Article 33, DEC inspectors have the authority to enter registered business premises during normal business hours to inspect records and equipment.

Question 63: If a certified applicator's license lapses in New York, they must do which of the following to reinstate it?

Simply pay a reinstatement fee with no additional requirements
Wait 2 years and reapply automatically
Retake all certification examinations from scratch
Complete required continuing education credits and pay renewal fees (Correct answer)

Correct answer: Complete required continuing education credits and pay renewal fees

Lapsed certifications require fulfillment of continuing education (recertification credits) and payment of renewal fees to be reinstated in New York.

Question 64: While mixing a concentrate, a technician splashes pesticide into their eyes. According to typical label first aid, what should be done first?

Wait to see if irritation develops
Rub the eyes with a clean towel
Rinse eyes gently with clean water for 15-20 minutes (Correct answer)
Apply eye drops and continue working

Correct answer: Rinse eyes gently with clean water for 15-20 minutes

Immediate, prolonged flushing with clean water is the standard first aid for pesticide eye exposure before seeking medical attention.

Question 65: The American dog tick is a vector for which disease in New York State?

Lyme disease
Ehrlichiosis
Rocky Mountain spotted fever (Correct answer)
Babesiosis

Correct answer: Rocky Mountain spotted fever

The American dog tick (Dermacentor variabilis) is the primary vector of Rocky Mountain spotted fever in the eastern US.

Question 66: A report shows unit A completed 320 inspections, unit B completed 25% more than unit A, and unit C completed half as many as unit B. How many inspections did unit C complete?

240
200 (Correct answer)
160
400

Correct answer: 200

Unit B completed 400 inspections (320 × 1.25), so unit C completed 200 (400 ÷ 2).

Question 67: Calibration of pesticide application equipment is performed to ensure that:

The sprayer is operating at maximum pressure
The correct amount of pesticide is applied per unit area as specified on the label (Correct answer)
The nozzle is free of blockages
The equipment is cleaned after each use

Correct answer: The correct amount of pesticide is applied per unit area as specified on the label

Calibration verifies that the sprayer delivers the label-specified application rate per acre or square foot, preventing under- or over-application.

Question 68: When is a NY PCO required to provide a written pesticide application report to a building owner or manager?

After every single application automatically
Only after termite treatments
Only after applications to schools
Upon request or when required by contract or regulation (Correct answer)

Correct answer: Upon request or when required by contract or regulation

NYS requires written reports to property owners/managers upon request and mandates them for specific regulated settings such as schools under applicable notification laws.

Question 69: A PCO discovers a pesticide spill in a vehicle. The FIRST step is to:

Contain the spill and don appropriate PPE before cleanup (Correct answer)
Leave the vehicle and call 911 without assessing
Drive to the nearest facility immediately
Dilute with large amounts of water

Correct answer: Contain the spill and don appropriate PPE before cleanup

Containing the spill and putting on PPE before cleanup prevents further contamination and protects the PCO from exposure.

Question 70: Which termite species is the most economically significant structural pest in New York State?

Dampwood termite
Eastern subterranean termite (Reticulitermes flavipes) (Correct answer)
Drywood termite
Formosan subterranean termite

Correct answer: Eastern subterranean termite (Reticulitermes flavipes)

The Eastern subterranean termite is the predominant termite species in New York and the primary cause of termite structural damage in the state.

Question 71: What is the purpose of a backflow preventer on a pesticide mixing and filling station?

To increase water pressure for mixing
To filter pesticide particles from the solution
To measure the volume of pesticide added
To prevent pesticide-contaminated water from flowing back into the potable water supply (Correct answer)

Correct answer: To prevent pesticide-contaminated water from flowing back into the potable water supply

A backflow preventer protects the public water supply from contamination if pressure drops cause siphoning of pesticide-laden water back through the hose connection.

Question 72: Which label section lists the first aid measures for pesticide exposure?

Environmental Hazards section
Active Ingredient declaration
Storage and Disposal section
Precautionary Statements — First Aid (Correct answer)

Correct answer: Precautionary Statements — First Aid

The Precautionary Statements section of the pesticide label includes first aid measures that must be followed in case of exposure.

Question 73: The black-legged tick (Ixodes scapularis), primary vector of Lyme disease in NY, is identified by its:

Gray body with white markings
Reddish-orange body with black legs and a black scutum (Correct answer)
All-black body and legs
Brown body with striped legs

Correct answer: Reddish-orange body with black legs and a black scutum

The black-legged (deer) tick has a characteristic reddish-orange body with distinctly black legs and a black dorsal scutum.

Question 74: Resistance management in IPM recommends rotating pesticide products by their:

Price per gallon
Signal word on the label
Mode of action (IRAC group), not just product name or active ingredient (Correct answer)
Brand name only

Correct answer: Mode of action (IRAC group), not just product name or active ingredient

Rotating by mode of action (IRAC classification) prevents selecting for resistance to a single biochemical target, even when products have different names.

Question 75: PCO appointments are often made to 'trainee' titles. What usually happens upon successful completion of the traineeship?

The employee returns to the eligible list
The position automatically converts to a provisional appointment
The employee must retake the PCO exam
The employee advances to the full journey-level title and salary grade (Correct answer)

Correct answer: The employee advances to the full journey-level title and salary grade

Trainees who complete the traineeship satisfactorily advance to the target journey-level title without re-examination.

Question 76: How can a PCO distinguish carpenter ants from termites?

Termites have antennae; ants do not
Carpenter ants have a constricted waist; termites have a broad, straight waist (Correct answer)
Termites have six legs; ants have eight legs
Carpenter ants are white; termites are black

Correct answer: Carpenter ants have a constricted waist; termites have a broad, straight waist

The most reliable visual distinction is the petiole: carpenter ants have a narrow, pinched waist while termite workers have a broad, uniform abdomen.

Question 77: Under NYS DEC rules, a commercial pesticide applicator must notify building occupants before an indoor application by:

No notification is required
Posting a sign only at the entrance
Providing advance notice as required by the specific pesticide label and state law (Correct answer)
Only notifying building owners, not occupants

Correct answer: Providing advance notice as required by the specific pesticide label and state law

NYS requires notification to occupants per pesticide label requirements and applicable state statutes including the School Notification Law for certain settings.

Question 78: You are adjusting the settings on your compressed air sprayer. Do the gallon-per-minute calculation. If it takes 40 seconds, I'll put it. In a bucket, mist 1 gallon of water.

6.5
2.5
1.5 (Correct answer)
3.5

Correct answer: 1.5

To calculate gallons per minute (GPM), we first convert the given time from seconds to minutes. 40 seconds is equivalent to 40/60 = 2/3 of a minute. If 1 gallon of water is misted in 2/3 of a minute, then in one full minute, the sprayer will dispense 1 gallon / (2/3 minute). This calculation results in 1 * (3/2) = 1.5 gallons per minute.

Question 79: What is the primary purpose of a pre-application site inspection before treating a structure?

To determine the customer's budget
To select the most expensive product
To satisfy advertising requirements
To identify pest species, harborage areas, and conducive conditions (Correct answer)

Correct answer: To identify pest species, harborage areas, and conducive conditions

A thorough pre-application inspection identifies the pest, its harborage, and conditions that support it, enabling an effective and targeted treatment plan.

Question 80: Backpack sprayer calibration for indoor pest control typically involves measuring output over:

The walking speed of the operator alone
The total tank volume only
A timed test of nozzle flow (GPM) at the target operating pressure (Correct answer)
The chemical label's maximum rate

Correct answer: A timed test of nozzle flow (GPM) at the target operating pressure

Accurate backpack calibration requires measuring actual nozzle output (GPM) at the specific operating pressure used during the job.

Question 81: A fumigation job requires respiratory protection. Before an employee wears a tight-fitting respirator, what must occur?

Approval from the pesticide manufacturer
Only a quick mirror check for visible gaps
Medical evaluation and fit testing under a respiratory protection program (Correct answer)
A 24-hour waiting period after the last application

Correct answer: Medical evaluation and fit testing under a respiratory protection program

OSHA requires medical clearance and fit testing before tight-fitting respirators are used on the job.

Question 82: Which sentence is written most clearly and correctly for a professional report?

The committee reviewed the proposal and recommended two changes. (Correct answer)
The committee, having reviewed, recommended the proposal two changes.
Reviewing the proposal, two changes was recommended by the committee.
The proposal, it was reviewed by the committee, and they had went on to recommend changes, two of them.

Correct answer: The committee reviewed the proposal and recommended two changes.

The first option is concise, grammatical, and in active voice, unlike the wordy or ungrammatical alternatives.

Question 83: A new procedure reduces processing errors but increases average processing time by 10%. Which additional fact would best justify keeping the new procedure?

Correcting an error costs far more time than the 10% increase adds (Correct answer)
Employees prefer the old procedure
Other agencies use different procedures
The old procedure was written five years ago

Correct answer: Correcting an error costs far more time than the 10% increase adds

If error correction costs exceed the added processing time, the net effect of the new procedure is positive.

Question 84: An IPM inspection report for a commercial kitchen should document all of the following EXCEPT:

The PCO's personal opinions about the kitchen staff (Correct answer)
Location and extent of infestation
Pest species identified
Conducive conditions and recommended corrective actions

Correct answer: The PCO's personal opinions about the kitchen staff

IPM inspection reports document objective findings — pest ID, harborage locations, conducive conditions, and recommendations — not subjective personnel assessments.

Question 85: Under NYS law, who may legally purchase and use Restricted Use Pesticides (RUPs)?

Only certified applicators or persons directly supervised by a certified applicator (Correct answer)
Any licensed business owner
Anyone with a valid pesticide dealer license
Any adult over 18 years of age

Correct answer: Only certified applicators or persons directly supervised by a certified applicator

RUPs may only be purchased and applied by certified applicators or individuals working under the direct supervision of a certified applicator.

Question 86: In New York, what generally must a commercial applicator provide to a residential customer before an indoor pesticide application?

Written information about the pesticide, such as label information or required notice (Correct answer)
A refund guarantee in writing
A list of competing pest control companies
Nothing, as long as the customer signed an annual contract

Correct answer: Written information about the pesticide, such as label information or required notice

NYS neighbor-notification and consumer information rules require applicators to supply pesticide information and required notices to occupants.

Question 87: In IPM, 'sanitation' as a control tactic specifically refers to:

Removing food, water, harborage, and waste that support pest populations (Correct answer)
Using food-safe cleaning chemicals
Applying disinfectant sprays after pest control
Cleaning up pesticide residues after treatment

Correct answer: Removing food, water, harborage, and waste that support pest populations

Sanitation eliminates the food, water, and shelter resources pests need to survive, making the environment inhospitable without any pesticide use.

Question 88: Eye protection rated for pesticide applications must meet which standard?

Standard sunglasses with UV protection
ANSI Z87.1 chemical splash goggles or face shield (Correct answer)
Industrial safety glasses only
Any safety glasses available on-site

Correct answer: ANSI Z87.1 chemical splash goggles or face shield

ANSI Z87.1-rated chemical splash goggles or face shields provide the proper protection against pesticide liquid and vapor reaching the eyes.

Question 89: I wanted to 1 you that I have faced some problems when using the client database. Just one of my previous five questions 2 accurate. <br> Which of the following should go in position two the most? <br>

Is
Have been
Are
Has been (Correct answer)

Correct answer: Has been

The subject of the second blank is 'Just one of my previous five questions.' Since 'one' is a singular subject, the verb must also be singular. 'Has been' is the correct singular past participle form, indicating that only one question, out of the five, has been accurate up to the present moment.

Question 90: When applying a pesticide with a compressed air sprayer, proper technique requires maintaining the wand at:

Variable distances based on operator comfort
A consistent distance from the surface to achieve uniform coverage (Correct answer)
Direct contact with the surface
Maximum reach distance at all times

Correct answer: A consistent distance from the surface to achieve uniform coverage

Maintaining a consistent wand-to-surface distance ensures uniform droplet size, pattern width, and application rate throughout the treatment.

Question 91: A power sprayer nozzle that produces a fan pattern is MOST appropriate for which type of application?

Misting nozzles for indoor space treatments
Foaming nozzles for void filling
Cone nozzles for high-pressure soil injection
Flat-fan nozzles for broadcast or band spraying on flat surfaces (Correct answer)

Correct answer: Flat-fan nozzles for broadcast or band spraying on flat surfaces

Flat-fan nozzles produce an even, flat spray pattern ideal for broadcast coverage of horizontal surfaces.

Question 92: Which of the following is the correct action if pesticide is ingested?

Call Poison Control (1-800-222-1222) and follow SDS guidance (Correct answer)
Induce vomiting immediately
Drink milk to neutralize the chemical
Wait and monitor symptoms at home

Correct answer: Call Poison Control (1-800-222-1222) and follow SDS guidance

Contacting Poison Control immediately and following SDS first-aid instructions is the correct protocol for pesticide ingestion.

Question 93: What does GPM stand for in pesticide sprayer calibration?

Gallons Per Minute (Correct answer)
Gallons Per Mile
Grams Per Mixture
Grams Per Meter

Correct answer: Gallons Per Minute

GPM (gallons per minute) is the nozzle output flow rate used as a key variable in calculating the correct application rate during calibration.

Question 94: When a pesticide is accidentally splashed in the eyes, the FIRST action is to:

Cover the eye with a bandage
Apply eye drops immediately
Flush eyes with clean water for 15–20 minutes (Correct answer)
Call poison control before doing anything

Correct answer: Flush eyes with clean water for 15–20 minutes

Immediate flushing with clean water for 15–20 minutes removes the chemical and minimizes tissue damage before seeking medical help.

Question 95: Which stage of the cat flea's life cycle is latent until it receives a signal that the host is present?

Caterpillar
Planula
Nauplius
Pupa (Correct answer)

Correct answer: Pupa

The pupal stage of the cat flea is known for its dormancy and resilience. Flea pupae can remain in a quiescent state for extended periods, sometimes months, until environmental cues like vibrations, warmth, or exhaled carbon dioxide signal the presence of a potential host. This allows them to emerge when conditions are favorable for feeding and reproduction.

Question 96: Machines with few moving parts

Simple machines (Correct answer)
Inclined plane
Fixed pulley
Simple pulley

Correct answer: Simple machines

Simple machines are fundamental mechanical devices designed to change the direction or magnitude of a force. They are characterized by having few or no moving parts, serving as the basic building blocks for more complex machinery. Examples include levers, pulleys, inclined planes, wedges, screws, and wheels and axles.

Question 97: What is the purpose of an anti-drip device (check valve) on a sprayer nozzle?

To increase spray pressure at the nozzle
To filter large particles from the solution
To adjust spray pattern width
To stop liquid flow when pressure drops below the operating threshold, preventing drips (Correct answer)

Correct answer: To stop liquid flow when pressure drops below the operating threshold, preventing drips

Anti-drip check valves close when operating pressure falls, preventing uncontrolled chemical dripping between spray passes.

Question 98: An applicator experiences pinpoint pupils, excessive salivation, and muscle twitching after using an organophosphate. These are symptoms of what?

Anticoagulant toxicity
Heat exhaustion
Cholinesterase inhibition poisoning (Correct answer)
Pyrethroid skin sensitization

Correct answer: Cholinesterase inhibition poisoning

Organophosphates and carbamates inhibit cholinesterase, producing the classic SLUDGE symptoms and pinpoint pupils.

Question 99: Which route of pesticide exposure is MOST common for applicators during routine work?

Dermal (through the skin) (Correct answer)
Inhalation (breathing vapors)
Oral (swallowing)
Ocular (through the eyes)

Correct answer: Dermal (through the skin)

Skin contact, especially on the hands and forearms, accounts for the majority of occupational pesticide exposure.

Question 100: In New York State, commercial pesticide applicators must keep records of each application for how long?

10 years
5 years
1 year
3 years (Correct answer)

Correct answer: 3 years

New York requires commercial applicators to retain pesticide application records for at least three years.

NYS Pesticide Commercial Operator (PCO) Certification Exam

The New York State Pesticide Commercial Operator (PCO) certification exam, administered by the NYSDEC, tests applicants on pesticide safety, integrated pest management, application equipment and calibration, and NYS laws and regulations required for commercial pesticide application licensing.

100

Questions

180 min

Time Limit

70%

To Pass

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