CMI Cheat Sheet 2026

The 30 highest-yield CMI facts, distilled from real exam questions. Print it, save it as a PDF, or study it here — free, no sign-up.

1. What is the correct dilution principle when preparing disinfectant solutions for restroom cleaning? → Follow the manufacturer's label instructions precisely
2. What is the role of regulatory compliance in sustainability? → Follow environmental laws
3. When working in occupied areas, a custodial technician should primarily: → Minimize disruption to occupants while maintaining cleaning standards
4. A custodial technician observes a coworker skipping required cleaning steps to finish earlier. What is the most professional response? → Report the behavior to a supervisor following proper protocols
5. When a CMI professional encounters unexpected results during a procedure, the FIRST action should be: → Stop, assess, and determine whether to proceed or seek guidance
6. How should custodial staff dispose of cleaning product containers that are completely empty? → Triple-rinse if required, and recycle or dispose of per manufacturer and local regulations
7. What is the CORRECT sequence when performing a Certified Custodial Technician technical procedure? → Plan, prepare, execute, verify, and document
8. When a building occupant complains that a restroom was not cleaned properly, what is the most appropriate first response from a custodial technician? → Apologize and immediately return to re-clean the area
9. How should Certified Custodial Technician professionals handle updated procedures? → Review updates, complete training, implement revisions
10. Why is energy efficiency important in facilities? → Reduce costs and impact
11. What role does calibration play in Certified Custodial Technician technical accuracy? → Ensures instruments produce accurate results over time
12. What role does calibration play in Certified Custodial Technician technical accuracy? → Ensures instruments produce accurate results over time
13. Why is proper ventilation important during restroom disinfection? → To prevent inhalation of chemical vapors and ensure safe air quality for workers
14. When preparing to clean a private office, a custodial technician should: → Knock and announce their presence before entering, even if the office appears empty
15. Which type of waste requires a red bag for disposal in commercial and healthcare facilities? → Regulated medical or biohazardous waste
16. What is the best way to prevent slips and falls? → Maintain clean and dry floors
17. When a CMI professional encounters unexpected results during a procedure, the FIRST action should be: → Stop, assess, and determine whether to proceed or seek guidance
18. What ergonomic practice should custodial technicians use when lifting heavy waste bags or containers? → Bend at the knees with a straight back, keeping the load close to the body
19. What is the correct procedure for reporting a workplace injury? → Report immediately and document
20. Which resource is critical to custodial operations? → Adequate supplies and equipment
21. When a CMI professional encounters unexpected results during a procedure, the FIRST action should be: → Stop, assess, and determine whether to proceed or seek guidance
22. In Certified Custodial Technician practice, what is the FIRST step when a safety hazard is identified? → Immediately secure the area and report the hazard
23. What is the best way to prevent cross-contamination during cleaning? → Use color-coded tools
24. How should a custodial technician handle a situation where a building occupant is consistently rude or disrespectful? → Remain calm and professional, and report repeated issues to a supervisor
25. Which factor MOST affects quality of CMI technical outcomes? → Practitioner's training, preparation, and attention to detail
26. Why is documentation important in facility management? → Track maintenance and compliance
27. What is the CORRECT sequence when performing a Certified Custodial Technician technical procedure? → Plan, prepare, execute, verify, and document
28. How often should high-touch surfaces be cleaned? → Daily or more often
29. Which practice conserves water in cleaning? → Using microfiber cloths
30. A custodial technician notices a spill in a high-traffic hallway that is a slip hazard. The area is outside their assigned zone. What should they do? → Place a wet floor sign and clean it up, then notify the appropriate staff