Commercial cockroach control
In a commercial kitchen the German cockroach is the species that matters. It breeds indoors, hides in equipment, and is the finding most likely to turn a routine verification into a corrective action.
Why German cockroaches are a commercial kitchen problem
The German cockroach (Blattella germanica) is a small, light brown cockroach with two dark stripes behind its head. Unlike the larger species that wander in from drains and gardens, it lives and breeds entirely indoors, close to warmth, moisture and food. A restaurant or cafe kitchen gives it all three, and its short breeding cycle means a few individuals carried in on deliveries can become a population within weeks.
Larger cockroaches, such as those coming up from drains, are still recorded and controlled, but they usually point to a drainage or proofing fault rather than an established indoor population.
Where they hide in a commercial kitchen
Common German cockroach harbourage
| Location | Why it suits them |
|---|---|
| Dishwasher and glasswasher plinths | Heat, moisture and food residue in a space nobody cleans |
| Motor housings of fridges and chillers | Constant warmth |
| Hollow legs and frames of stainless benches | Dark, protected, close to food |
| Wall junctions behind cooking lines | Grease, warmth and gaps in sealant |
| Cardboard in dry stores | Arrives with them on deliveries and gives cover |
| Electrical and data boxes, POS units | Warmth and narrow cavities |
How commercial cockroach control works
- Monitor firstInsect glue boards are placed at the harbourage points above, so the extent of the population is measured before treatment and after it.
- Treat the harbourageGel baits are placed into cracks and voids where cockroaches live, not sprayed over surfaces where food is handled.
- Break the breeding cycleWhere activity is established, follow-up visits are timed to catch nymphs hatching from egg cases that treatment cannot reach.
- Fix the conditionsThe report lists the sealant gaps, plinths and cardboard storage that let the population establish, and who closes each one.
- Prove itMonitor counts at each visit are recorded by point, so the verifier can see the population fall to zero and stay there.
Preparing the kitchen for a treatment visit
- Schedule the visit after close of service, with food covered or stored away.
- Give access to plinths, equipment backs and dry store shelving.
- Remove cardboard from food areas before the visit.
- Do not spray your own insecticide on harbourage before a gel treatment; it drives cockroaches away from the bait.
- Record the visit and the result in your food safety records.
Questions facility managers ask
Can a kitchen stay open during cockroach treatment?
Gel baiting is placed into cracks and voids rather than over surfaces, so it is usually done after service with food covered or stored. The written scope will say if any area needs to be closed for a period and why.
What should staff do if they see a cockroach during service?
Record when and where it was seen, protect or dispose of any food it may have contaminated, clean and sanitise the area, and call for an additional visit. Those are the corrective actions the food rules expect.
Why do cockroaches come back after a treatment?
Usually because egg cases survived, because harbourage was missed, or because new cockroaches arrive on deliveries. Timed follow-up visits, monitoring at each point and checking incoming cardboard address all three.
Related pages
Sources
- Food Regulations 2015, reg 18 (pest control)
- MPI, Template Food Control Plan: "Checking for pests" (August 2026)
Request a site audit. Our partner's technician walks the site and checks the records your verifier or committee will ask for. You receive a written scope with a monitoring layout and a quoted visit schedule.