ALAT Facility Operations and Sanitation Questions and Answers 1 — Questions and Answers
Question 1: An animal facility has implemented an Integrated Pest Management (IPM) program. Which of the following actions is the primary and initial focus of an effective IPM program?
- Routine application of chemical pesticides in all animal rooms.
- Setting lethal traps as the first line of defense against rodents.
- Utilizing facility maintenance and sanitation to prevent pest access and harborage. (Correct answer)
- Immediate deployment of biological controls, such as predatory insects.
Correct answer: Utilizing facility maintenance and sanitation to prevent pest access and harborage.
An Integrated Pest Management (IPM) program emphasizes prevention as the primary strategy. This includes proper building maintenance to seal entry points, good sanitation practices to eliminate food and water sources, and removing clutter to reduce places where pests can hide (harborage). Chemical pesticides are used only as a last resort when other methods are unsuccessful.
Question 2: A technician is tasked with disposing of animal carcasses that contain a biohazardous agent. According to general biosafety guidelines, what is the most appropriate final disposal method for this type of waste?
- Placing them in a standard landfill after bagging.
- Incineration. (Correct answer)
- Burying them on facility grounds.
- Disposing of them via the sanitary sewer system.
Correct answer: Incineration.
Animal carcasses, especially those containing biohazardous agents, must be disposed of in a way that destroys the infectious material. Incineration is the standard and most effective method for achieving this and ensuring the waste is rendered safe. Other methods like landfilling or burial do not guarantee the destruction of hazardous agents.
Question 3: A research protocol requires a reversed light cycle (lights off during the day) for a room of nocturnal rodents. An ALAT needs to enter the room to perform health checks during the dark cycle. Which of the following is the BEST practice to minimize disruption to the animals?
- Turn on the main room lights for the shortest time possible.
- Use a flashlight with a red bulb or filter. (Correct answer)
- Prop the door open to let light in from the hallway.
- Announce their presence loudly before entering the room.
Correct answer: Use a flashlight with a red bulb or filter.
Many species, particularly nocturnal rodents, cannot see red light well. Using a red light allows staff to see while causing minimal disruption to the animals' circadian rhythms and behavior. Turning on the main lights, even for a short time, can cause significant stress and disrupt physiological processes.
Question 4: Which type of cage washer is designed like a conveyor belt system to process large quantities of smaller equipment like rodent cages, wire-bar lids, and bottles continuously?
- Cabinet washer
- Rack washer
- Tunnel washer (Correct answer)
- Pressure washer
Correct answer: Tunnel washer
Tunnel washers are designed for high-throughput, continuous processing. Soiled items are loaded onto a conveyor belt that moves them through pre-wash, wash, rinse, and final rinse/drying chambers. Rack washers are for larger items like racks and bulk carts, and cabinet washers are smaller, batch-style units.
Question 5: An ALAT is responsible for sanitation in a room housing dogs. According to the 'Guide for the Care and Use of Laboratory Animals', how often should primary enclosures for larger animals like dogs typically be cleaned and have waste removed?
- Weekly
- Twice a week
- Monthly
- Daily (Correct answer)
Correct answer: Daily
For larger animals, such as dogs, the 'Guide' standards recommend that soiled bedding and excreta should be removed daily. The primary enclosures should also be cleaned and sanitized daily to maintain a healthy environment.
Question 6: When preparing a chemical disinfectant solution for sanitizing animal procedure surfaces, which of the following factors is most critical for ensuring its effectiveness?
- The color of the storage bottle.
- The ambient room temperature.
- The correct dilution and required contact time. (Correct answer)
- The brand name of the disinfectant.
Correct answer: The correct dilution and required contact time.
For a chemical disinfectant to work as intended, it must be diluted to the proper concentration as specified by the manufacturer and remain on the surface for a specific duration, known as the contact time. Without the correct dilution and contact time, the disinfectant may not successfully eliminate the targeted microorganisms.
ALAT Facility Operations and Sanitation Questions and Answers 1
An animal facility has implemented an Integrated Pest Management (IPM) program.
Which of the following actions is the primary and initial focus of an effective IPM program?