Pest prevention around commercial refrigeration

Why refrigeration attracts pests

• Warmth: the machine compartment around the compressor stays warm day and night.
• Water: defrost water in the drip tray, condensation under units and leaking drain lines.
• Food: crumbs and spills beneath and behind units that are rarely moved.
• Shelter: dark gaps behind kick plates, cable entry holes, hollow castor mounts and cardboard stacked nearby.
• Electronics: cockroaches are drawn into controller housings and fan motors, where their bodies and droppings cause short circuits.

Clean under and behind the units

The area under and behind a refrigerator is usually the dirtiest floor in the kitchen. Units on lockable castors can be rolled out for cleaning; plan a weekly pull-out for those on the hot line. Units on fixed feet should be raised enough to sweep and mop beneath, or sealed to the floor so there is no gap at all. Clean the machine compartment area with the power isolated during each condenser clean, and remove the lint and debris that collects around the compressor.

Take away the water

• Keep the drip tray clean and check it is evaporating; a tray that stays full is a breeding pool.
• Clear drain lines regularly so water does not overflow inside the machine compartment.
• Fix any leak under or behind a unit within the day.
• Make sure floor drains near refrigeration have their covers and traps in place.
• Wipe up condensation that forms around units in the monsoon.

Seal the hiding places

Gaps where cables and pipes leave the cabinet, holes in the back panel, and the space under kick plates are common harbourage points. Ask your service technician to check and seal cable entries and remove unused holes during an AMC visit, using materials that do not block ventilation or trap heat. Do not stuff cloth or foam into grilles — the condenser needs that airflow. Remove cardboard cartons from cold storage and the areas around units as soon as they are unpacked; cockroaches lay eggs in corrugated cardboard.

Working with your pest-control contractor

• Tell them where your refrigeration units are and ask them to include machine compartments in inspections.
• Ask for gel baits and monitoring traps near units rather than liquid sprays into electrical areas, which can damage controllers and fans.
• Cover or remove exposed food during any treatment and clean food-contact surfaces afterwards.
• Keep a record of treatments and sightings; patterns show where pests are entering.
• Place sticky monitoring traps near units and check them weekly.

Flies around display cases

Open-fronted and serve-over display cases attract flies to the product and to sugary drips on the glass and trim. Clean drips at once, keep sweets and cut fruit covered when not being served, keep entrance doors closed or fitted with air curtains or strip curtains, and place fly-control devices where they do not hang directly over food. Do not use aerosol insecticides near open food.

Why inspectors care

For licensed food businesses in India, pest control is part of the general hygiene and sanitary requirements set out in Schedule 4 of the FSSAI licensing and registration regulations. Inspectors look for evidence of pest activity, a pest-control programme and records. Clean, sealed, dry areas around refrigeration are part of showing that the programme works. Check the current requirements for your category of business with FSSAI or your food-safety consultant.

Safety notes

Isolate power before cleaning around machine compartments or removing kick plates. Pest damage to wiring is a fire and shock risk; if you find chewed cables or droppings in a controller, have a technician inspect the unit before relying on it. On units with hydrocarbon refrigerants, sealing work near pipework should be done by a technician trained in flammable refrigerants.