CMI CMI Restroom Sanitation & Infection Control 1 — Questions and Answers
Question 1: What is the correct cleaning sequence when sanitizing a public restroom?
- Top to bottom, clean to dirty (Correct answer)
- Bottom to top, dirty to clean
- Left to right only
- Random order based on soiling
Correct answer: Top to bottom, clean to dirty
Cleaning from top to bottom and clean to dirty prevents recontaminating already-cleaned surfaces.
Question 2: Which color-coding practice helps prevent cross-contamination in custodial operations?
- Using different colored cloths for restrooms vs. other areas (Correct answer)
- Using the same mop for all areas
- Rinsing equipment between uses only
- Color-coding is not necessary
Correct answer: Using different colored cloths for restrooms vs. other areas
Color-coded microfiber cloths and mops prevent pathogens from restrooms being transferred to food service or office areas.
Question 3: What does 'dwell time' mean when using a disinfectant in a restroom?
- The time the disinfectant must remain wet on a surface to be effective (Correct answer)
- How long it takes to dry
- The shelf life of the product
- How long before rinsing is required
Correct answer: The time the disinfectant must remain wet on a surface to be effective
Dwell time is the required contact time a disinfectant must remain on a surface to kill targeted pathogens as specified on the label.
Question 4: Which area of a restroom typically harbors the highest concentration of pathogens?
- Toilet handle and seat (Correct answer)
- Paper towel dispenser
- Mirror
- Ceiling vents
Correct answer: Toilet handle and seat
Toilet handles and seats are high-touch surfaces directly exposed to fecal matter, making them hotspots for pathogens.
Question 5: What minimum PPE should custodial technicians wear when cleaning restrooms?
- Disposable gloves and eye protection (Correct answer)
- Hard hat and steel-toed boots
- Apron only
- No PPE is required for routine cleaning
Correct answer: Disposable gloves and eye protection
Gloves prevent skin contact with pathogens and chemicals, while eye protection guards against splashes of contaminated water or cleaning agents.
Question 6: How should custodial technicians handle a restroom with a bloodborne pathogen spill?
- Use EPA-registered disinfectant with proper PPE and follow biohazard cleanup protocols (Correct answer)
- Clean with regular soap and water
- Leave it for a supervisor to handle
- Use any available cleaning product immediately
Correct answer: Use EPA-registered disinfectant with proper PPE and follow biohazard cleanup protocols
Bloodborne pathogen spills require EPA-registered disinfectants, proper PPE including gloves and face shield, and adherence to OSHA Bloodborne Pathogens Standard protocols.
CMI CMI Restroom Sanitation & Infection Control 1
What is the correct cleaning sequence when sanitizing a public restroom?