Cockroaches in a Commercial Kitchen: Act Before the Inspector

Closing up on a Saturday night, the chef flicks the light on in the dry store and something moves fast along the skirting. Everyone hopes it was a beetle. It very rarely is. If you run a kitchen in South Wales and you've just had that moment, the next day or two matter more than the next month.

Why one sighting deserves prompt investigation

Cockroaches are nocturnal and they hide well. Because cockroaches are nocturnal and hide well, a daylight or open-floor sighting can indicate significant activity, disturbance or competition for harbourage. It does not prove the size of the population, but it warrants an immediate survey.

They favour exactly what a commercial kitchen provides. Constant warmth from ovens and dishwashers. Moisture. Grease. Cardboard deliveries. Narrow gaps behind fixed equipment that nobody has moved since it was installed. A domestic kitchen is a poor home for them by comparison, which is why this is disproportionately a trade problem.

What it does to your rating

Your food hygiene rating is based on hygienic food handling, the physical condition of the premises and facilities, and food safety management. Pest activity can affect one or more of those elements depending on what the officer finds and how effectively you have managed it. The law behind it, assimilated Regulation 852/2004, requires food businesses to have adequate procedures in place to control pests. An officer who finds cockroaches is not just recording an infestation, they're recording that your procedures didn't catch it. Depending on the seriousness and immediacy of the risk, officers may use hygiene improvement or emergency prohibition procedures. In Wales, the resulting food hygiene rating must be displayed for customers.

The first 24 hours

Don't reach for the supermarket spray. We'll be blunt about why: retail insecticides may be unsuitable for food premises, may fail to reach hidden insects and, where products are repellent or used badly, can disperse activity into other harbourages. If you share a building with other food businesses, and half of you do, you've just made it everybody's problem.

Do this instead. Write down what was seen, where and when, because that log is both your treatment map and your due diligence record. Pull equipment out and look behind it with a torch, especially anything warm. Check deliveries and break down cardboard the day it arrives rather than stacking it. And call someone the same week, not after service settles down.

What proper treatment involves

A survey first, because the harbourage points determine everything: behind and under the fixed equipment, in motor housings, around pipework and drains, in the voids you can't see. Then targeted treatment appropriate for a food environment, applied so it reaches where the insects actually live rather than where you saw one. Then follow-up visits, because a single treatment that isn't checked is a guess. We work around service times and use unmarked vehicles, which matters when your reputation is the point of the exercise. More on how we handle trade premises is on our food and hospitality page, with the detail on treatment on our cockroach control page and how we work generally on our pest control page.

Get in touch

Seen something you'd rather not have seen? Get in touch today, discreetly, and we'll get someone out before it becomes an inspection story.