Module 10 of 13
Pest Prevention
Why pests are a hazard, how to spot an infestation, denying pests access, food and shelter, and working with a licensed pest control operator.
4 lessons · about 12 minutes
Learning objectives
- Explain the food safety risk pests present.
- Identify the signs of common pest infestations.
- Apply exclusion and sanitation measures that deny pests entry and food.
- Describe the role of a licensed pest control operator.
10.1Why Pests Are a Food Safety Hazard
2 minPests are not just unpleasant — they are mobile carriers of pathogens and a serious regulatory violation.
- Rodents, cockroaches and flies carry pathogens such as Salmonella, Shigella and E. coli on their bodies and in their droppings.
- Pests contaminate food, packaging and food-contact surfaces, and damage stock by gnawing through containers.
- An active infestation can result in an immediate closure by the health authority.
- Effective control follows three principles: deny access, deny food and water, and work with a professional.
10.2Signs of an Infestation
3 minPests are mostly nocturnal and hidden. You are far more likely to see their traces than the pests themselves.
- Common signs of pest activity include droppings, gnaw marks, and nesting materials in dry storage or behind equipment.
- Cockroaches: a strong oily or musty smell, dark pepper-like droppings, and egg cases (capsules) in warm, dark, moist places.
- Rodents: dark, shiny droppings, gnawed packaging and wiring, greasy rub marks along walls, and tracks in dust or flour.
- Flies: clusters around drains, garbage and door openings — often a sign of an unclean drain or an uncovered bin.
- Check deliveries, pallets and cardboard on arrival — cardboard is a common way pests enter the building.
10.3Denying Pests Access, Food and Shelter
4 minPrevention is almost entirely maintenance and housekeeping. Remove what pests need and they have no reason to stay.
- Seal cracks, gaps, and openings in walls, floors, and around pipes to keep pests out (this is called exclusion).
- Keep doors and windows closed or screened, install air curtains and self-closing doors, and don't prop exterior doors open during deliveries.
- Store garbage in covered containers and remove it regularly — pests are drawn to food waste; keep outdoor dumpsters closed, clean and away from the building.
- Clean up spills and crumbs immediately, especially under and behind equipment, and fix leaks that provide water.
- Keep food in sealed containers 6 inches off the floor, break down and remove cardboard boxes promptly, and keep the exterior free of clutter and standing water.
10.4Working with a Licensed Pest Control Operator
3 minPesticides in a kitchen are a chemical hazard. Applying them is a licensed professional's job, never a food handler's.
- Report signs of pests to a manager immediately so a licensed pest control operator (PCO) can be called.
- Never apply pesticides yourself — improper use is a chemical contamination hazard and usually illegal in a food establishment.
- Before a treatment, remove or cover food, utensils and equipment, and clean and sanitize surfaces afterwards.
- Keep the PCO's service reports, treatment records and any pesticide SDS on file for inspectors.
- Work with the PCO on a written Integrated Pest Management (IPM) program that prioritizes prevention over chemicals.
Key takeaways
- Common signs of pest activity include droppings, gnaw marks, and nesting materials in dry storage or behind equipment.
- Seal cracks, gaps, and openings in walls, floors, and around pipes to keep pests out (this is called exclusion).
- Keep doors and windows closed or screened, and don't prop exterior doors open during deliveries.
- Store garbage in covered containers and remove it regularly — pests are drawn to food waste.
- Break down and remove cardboard boxes promptly — they are a common way pests enter and nest.
- Report signs of pests to a manager immediately so a licensed pest control operator (PCO) can be called.
- Never apply pesticides yourself — that is the PCO's job.
Knowledge check
Next module: Employee Health and Illness Reporting
