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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 min

Pests 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 min

Pests 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 min

Prevention 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 min

Pesticides 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

Why should cardboard boxes be broken down and removed promptly?
Allergens

Next module: Employee Health and Illness Reporting