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1. Which approach is the recommended standard for managing pests in a food facility?

Integrated Pest Management (IPM) is the standard food-safety approach. It combines prevention (denying food, water, and shelter), routine monitoring, and the most targeted control method available. Routine blanket spraying is discouraged because it does not address the conditions that attract pests.

2. Denying pests the three things they need to survive in a facility means denying them:

The three pillars of pest prevention are eliminating access to food, water, and shelter (harborage). Store food in sealed containers, fix leaks and standing water, and remove clutter where pests can nest.

3. Small dark pellets that look like grains of rice are most likely a sign of which pest?

Rodent droppings are typically dark, firm, and shaped like grains of rice. Cockroach droppings, by contrast, look like ground pepper or coffee grounds. Identifying the type of dropping helps target the response.

4. Which of the following is a classic sign of a cockroach infestation?

Cockroaches give off a distinct oily or musty odor when their numbers are high. Other signs include brown egg cases (oothecae), shed exoskeletons, and droppings that resemble coffee grounds. Rice-grain droppings point to rodents, webbing to stored-product pests, and maggots to flies.

5. To exclude rodents and crawling insects, gaps around exterior doors and cracks in walls should be sealed if they are larger than approximately:

A mouse can squeeze through a gap as small as about 1/4 inch. Cracks, holes, and door gaps of that size or larger should be sealed, fitted with door sweeps, or otherwise repaired. Window screens should be tight (mesh of at least 16 per square inch) and exterior doors should be self-closing.

6. Who is allowed to apply pesticides inside a California food facility?

Pesticides in food facilities must be applied by a licensed Pest Control Operator. Before treatment, food and food-contact surfaces are removed or covered, and equipment is washed before reuse. Untrained staff must not use general-purpose pesticides in the kitchen.

7. You see one live cockroach in the dish area during lunch service. What does this most likely indicate?

Cockroaches are nocturnal and hide in cracks and warm voids. Seeing one during the day usually means there are many more out of sight. Report the sighting to the manager so monitoring and exclusion can be stepped up and a licensed PCO contacted if needed.

8. A delivery of rice arrives with one bag torn and showing small holes, webbing, and live beetles inside. What is the correct action?

Food showing signs of pests — holes in packaging, webbing, live insects, droppings, or gnaw marks — must be rejected at receiving. Inspect adjacent items in the same shipment, document the rejection, and notify the supplier. Never try to salvage pest-contaminated food.

9. During a morning walk-through you find dark droppings about 3/4 inch long behind the dry-storage shelves. Compared with mouse droppings (about 1/4 inch, rice-grain size), these larger droppings most likely came from:

Rat droppings are noticeably larger than mouse droppings — roughly 3/4 inch (about 1.9 cm) long, while mouse droppings are about 1/4 inch (rice-grain size). Cockroach droppings look like ground pepper or coffee grounds. Identifying dropping size helps target the right control plan.

10. Small dark flies that hover near the mop sink and floor drains, and breed in the slimy film inside drains, are most likely:

Drain flies (also called moth flies) breed in the gelatinous organic film that builds up inside floor drains, mop sinks, and sewer lines. Routine drain cleaning and biological drain treatments remove the breeding material. House flies prefer garbage and decaying matter; fruit flies prefer overripe produce.

11. An employee opens a 5 lb bag of flour and notices fine silky webbing along the inside of the bag and small caterpillar-like larvae. This is most consistent with infestation by:

Stored-product pests — including Indian meal moths, grain weevils, and flour beetles — leave silky webbing, larvae, and shed skins inside bags of flour, rice, cereal, and other dry goods. The product must be discarded, the storage area cleaned, and remaining stock inspected. Rotating stock (FIFO) and sealed containers help prevent recurrence.

12. German cockroaches — the species most commonly found in commercial kitchens — prefer harborage that is:

German cockroaches thrive in warm, dark, moist hiding places near food and water — behind cooking equipment, under sinks, inside motor housings, and in cracks of cabinets. Reducing clutter, sealing cracks, fixing leaks, and cleaning grease build-up removes the conditions they need.

13. Under standard exclusion practice, the maximum gap allowed under an exterior door of a food facility is approximately:

Exterior doors should fit tightly with no more than about 1/4 inch of gap underneath; this is enforced with a door sweep or threshold. A mouse can squeeze through a gap of about 1/4 inch, so anything larger creates a clear entry path. Exterior doors must also be self-closing.

14. Window and vent screens on a food facility should have a mesh density of at least:

Industry guidance and the FDA Food Code call for screens of at least 16 mesh per square inch on openable windows and vents to keep out flies and other flying insects. Screens must be intact (no holes or tears) and tight-fitting.

15. An air curtain (a downward stream of high-velocity air installed above a doorway) is used in food facilities to:

Air curtains create a downward jet of air that discourages flying insects from entering through doors that are opened often (deliveries, dining patios). They supplement — but do not replace — tight-fitting self-closing doors, screens, and door sweeps. Air curtains do not contain pesticide.

16. In California, a Pest Control Operator (PCO) hired to treat a restaurant must hold a license issued by:

Pesticide application in food facilities is regulated under federal FIFRA and, in California, by the California Department of Pesticide Regulation and the Structural Pest Control Board. Always confirm the PCO has a valid structural pest control license before they treat a food facility.

17. Where may pesticides and rodenticides be stored in a food facility?

Pesticides must be stored in their original labeled containers in a locked area separate from food, utensils, linens, and food-contact surfaces. They may never be stored above food or on the same shelf, to prevent leaks or accidental contamination. The walk-in cooler is for food storage only.

18. In Integrated Pest Management (IPM), what is typically considered the FIRST line of defense — done before any chemical control?

IPM treats sanitation as the first line of defense: regularly cleaning floors, drains, and equipment; promptly wiping up spills; emptying trash; and removing clutter. This denies pests the food, water, and shelter they need, so chemical control becomes a last resort, not a routine.

19. Outdoor garbage and grease containers serving a food facility should be:

Outdoor waste containers must have tight-fitting lids to keep rodents, flies, and other pests out. They must sit on a smooth, non-absorbent paved surface (concrete or asphalt) that can be cleaned, and be located so odors and pests do not migrate toward food prep areas or entrances. Empty often enough to prevent overflow.

20. While prepping for service you spot rodent droppings under a dry-storage shelf. Following standard procedure, your FIRST step is to:

Any sign of vermin must be reported to the person in charge immediately. The PIC arranges for cleaning and sanitizing of the affected area, evaluates any exposed food (typically discarded), and schedules a licensed Pest Control Operator. Food handlers do not apply pesticides themselves, and droppings are handled with gloves and proper disposal — never bare hands.

21. While restocking under a prep table you turn on the light and see a single cockroach scurry into a crack. Why is this finding concerning even though you only saw one?

Cockroaches are nocturnal and avoid light, so they normally stay hidden in cracks, voids, and warm equipment. Seeing even one during normal operations usually means a much larger established population is harboring nearby. Treat any sighting as a sign of infestation, not an isolated case.

22. Which of the following is NOT a typical sign of a cockroach infestation?

Cockroach signs include oothecae (capsule-shaped egg cases) glued in tight spaces, shed skins from molting, dark smear marks along travel paths, and a characteristic musty/oily odor. Half-inch dry pellets are more consistent with rodent droppings, not cockroaches — cockroach droppings look like ground pepper or coffee grounds.

23. Integrated Pest Management (IPM) is BEST defined as:

IPM is an ecosystem-based strategy that combines prevention (exclusion, sanitation), monitoring (inspections, traps), and targeted control to keep pests below levels that cause harm — using pesticides only when needed and as a last resort. Total eradication and routine calendar spraying are not IPM goals.

24. The three core things an IPM program tries to deny pests in a food facility are:

IPM is built on denying pests the three resources they need to survive and reproduce: food (spills, crumbs, exposed product, garbage), water (leaks, condensation, standing water in drains), and shelter (clutter, cracks, cardboard, voids). Removing these is more effective and durable than pesticide alone.

25. Sealing exterior wall penetrations and pipe gaps as an exclusion measure: which gap size is small enough to keep out a MOUSE (the harder of the two to exclude)?

Mice can squeeze through gaps roughly the size of a pencil — about 1/4 inch — while rats need only about 1/2 inch. So exclusion must close openings to about 1/4 inch or smaller to keep mice out. Use rodent-proof materials such as steel wool plus sealant, hardware cloth, or metal flashing — not foam alone, which rodents chew through.

26. Exterior doors of a food facility are required to be:

Exterior doors must be tight-fitting and self-closing so they stay shut except during entry, exit, or active deliveries. A door that is propped open or wedged invites flies, rodents, and birds. Self-closing devices, door sweeps, and screens together form the exclusion barrier.

27. A pallet of rice arrives. You see a torn corner on one bag, what appear to be gnaw marks, and a few dark pellets on the wrap. The correct action is to:

Receiving is the last chance to stop an infestation at the door. Packages showing gnaw marks, droppings, holes, or other evidence of pests must be rejected, regardless of how the product itself looks. Brushing off and storing risks introducing live pests or eggs into the storeroom. Notify the supplier and the PIC, and document the rejection.

28. Pest Control Operators are advised to ROTATE among different classes of pesticide active ingredients over time mainly because:

When the same active ingredient is used over and over, the small fraction of pests that can tolerate it survive and pass that trait on, producing a resistant population. Rotating among different chemical classes (and combining with non-chemical IPM tools) slows resistance and keeps treatments effective.

29. When pesticides are applied inside a food facility, food, food-contact surfaces, and utensils must be:

Pesticides are not for food contact. Before application, food, single-service items, utensils, and food-contact surfaces are removed or fully covered, and treatments are typically scheduled when the facility is closed. After application, food-contact surfaces are washed, rinsed, and sanitized before food handling resumes.

30. A staff member pours a leftover concentrate of insecticide into an unlabeled water bottle and stores it in the chemical closet for later. This is:

Pesticides must be stored in their original labeled containers. Transferring chemicals into unlabeled bottles — especially food/beverage containers — is a serious safety hazard: it removes the safety data, mixing instructions, and warnings, and it can be mistaken for a drinkable liquid. Label requirements come from FIFRA and California pesticide rules.

31. A line cook spills sugar syrup on the floor near the bar. To support pest control, the spill should be cleaned:

Sugary or sticky spills are an instant food source for ants, flies, and cockroaches, and add moisture that supports rodents. Cleaning spills immediately — rather than waiting for the scheduled mop — is a basic IPM sanitation practice that removes food and water before pests find them.

32. A bin of bulk flour was clearly contaminated by mouse droppings overnight. What must be done with the flour?

Any food exposed to vermin or rodent droppings is considered adulterated and must be discarded — sifting or baking does not reliably remove pathogens such as Salmonella or Hantavirus-related risks. After disposal, clean and sanitize the area and adjacent food-contact surfaces, then notify the PIC.