Pest control for food businesses: checks, proofing and records

What pest control is for

Food premises have to be laid out and maintained so you can protect food from contamination, including contamination by pests. Food waste has to leave rooms where food is kept before it builds up. Those duties sit in assimilated Regulation (EC) No 852/2004, enforced in Great Britain by the food hygiene regulations. The Food Standards Agency's Safer Food, Better Business pack for caterers treats pest control as a safe method in the cross-contamination section, and it puts a pest check on the opening list: all areas free from evidence of pest activity. The method is not a logo on a van. It is the checks your team actually do, the proofing you keep in repair, and the note in the diary when a sack is chewed.

The Food Standards Agency groups the pests that turn up in food businesses into three: rodents (rats and mice), insects (cockroaches, beetles, ants and flies), and birds such as pigeons. Stored-product insects, including flour beetles and moths that live in dry goods, sit with the insects and are easy to miss because they arrive inside a delivery rather than through a hole in the wall. Ants follow a spill. Flies follow a bin and a wet mop. None of these is a housekeeping detail you can leave until the next deep clean. Droppings and insects in food are contamination. Food that has been gnawed, soiled or infested is not fit to use, even if you pick the obvious bits out.

A pest-control contract is the usual way a catering business meets the duty. It is not, by itself, what the law names. The law asks for adequate procedures that work in your premises. In practice, officers expect to see a competent person dealing with bait, proofing advice and insect treatment, because those jobs go wrong when an untrained member of staff sprays an aisle of open food or moves a bait box to sweep behind it. If you do not have a contractor, you still need a written system that is at least as good: who checks, what they look for, what they do on the day they find activity, and how you stop a treatment from landing in the food. Most small kitchens are safer with a contractor and a manager who reads the report. Scottish businesses should follow Food Standards Scotland and CookSafe, which set out pest control in the same practical spirit. Do not paste an English diary sentence into a Scottish pack and leave the CookSafe pages blank.

Pest control sits next to cleaning, deliveries and maintenance. A spotless pass with a hole under the back door will still have mice. A sealed door with a month of food debris under the fridge will still have cockroaches. The cleaning schedule is where spillages, drains and the area under equipment get a named frequency. The delivery checks are where damaged bags and insects in a sack should be stopped before they reach the shelf. The SFBB guide explains how the safe method, the daily diary and the 4-weekly review fit together.

Signs, not only a sighting

Waiting until someone sees a live mouse is how an infestation gets a fortnight's head start. Mice are nocturnal, cautious, and happy behind a freezer. The opening check and the less frequent extra check in Safer Food, Better Business are about evidence. Train the team to look, and to say what they looked at, rather than to tick "no pests" from the doorway.

• Droppings. Mouse droppings are small, dark and pointed, often scattered along a run behind boxes or under a shelf. Rat droppings are larger and blunter. Fresh droppings are soft and shiny. Old ones are grey, hard and crumble. A scatter of fresh droppings is current activity, even if nobody has seen the animal.
• Gnawing and damaged packaging. Torn sacks, chewed corners on pasta, holes in bread bags, and tooth marks on wood or plastic. Rodents have to gnaw. A neat hole in a flour bag is not a split seam from the supplier.
• Smear marks and runs. Greasy dark marks along skirtings, pipes and the edges of steps, where fur repeatedly touches the same line. Footprints and tail marks in dust or flour are the same clue. If you clean them away, look again the next morning. Marks that return overnight are a run.
• Smell, nests and holes. A sharp ammonia smell in a cupboard, shredded paper or insulation, and a hole at floor level with rub marks around it. Mice can use a gap about the width of a pencil. Rats need a larger gap, but not a door left open. Look where pipes pass through walls, under the back door, and behind kick plates.
• Cockroaches. Pepper-like specks, empty egg cases, a sweet musty smell, and smear marks in warm voids: behind the fridge motor, inside a panel, around a hot water pipe. They are rarely seen in a bright lunch service. A torch at the end of the night, or a contractor's monitor, finds them. One cockroach in a food room is a reason to call, not a reason to squash it and carry on.
• Flies. Adult flies, maggots in a bin or a drain, and fruit flies hanging over a drip tray, a bar gun, a mop bucket or a piece of fruit left to soften. Flying insects in the kitchen during prep are a sign the bin, the drain or an open door is feeding them.
• Stored-product insects. Small beetles in flour, webbing and caterpillars in nuts, dried fruit or pet food if you sell it, and moths in the dry store at dusk. These often arrive in the goods. They then walk into the next tub if you top up old product with new.
• Birds. Droppings on the step, feathers, nesting material in a canopy or a gap above a roller shutter, and food stolen from an open bin. A pigeon in the dining room is unpleasant. A pigeon in the kitchen is a contamination event.

Write the place, not a vague "pests seen". "Droppings behind the rice bin, dry store, Tuesday opening" can be checked tomorrow. "All fine" cannot. If you are not sure whether a speck is a dropping or a seed, bag a sample or photograph it for the contractor and keep the food on that shelf quarantined until you know. Do not sweep the evidence into the bin and hope you were wrong.

Proofing the building

Proofing is the work that stops pests getting in. Bait does not seal a door. A kitchen that is baited every month and propped open every afternoon will keep its mice. Walk the outside and the inside with the same list the contractor uses, and put the gaps you find onto a repair list with a date.

• Doors. A brush seal or metal kick plate on the bottom of the back door, a self-closer so the door is not wedged with a crate, and a letterbox or cat flap that does not open into a food store. If the cook props the door for heat, the fix is ventilation that does not include a mouse, not a lecture that lasts one shift.
• Pipes and cables. Holes around waste pipes, gas pipes and cable trays filled so there is no gap. Expanding foam on its own is a poor mouse-proofing material. They chew it out. A metal plate or wire mesh, fitted so it meets the pipe, lasts. Look again after any plumber or kitchen fitter has been, because a new pipe often arrives with a new hole.
• Windows, air bricks and drains. Fly screens on windows that are opened in summer, mesh on air bricks that is still intact, and drain covers that have not been cracked by a delivery van. A missing drain cover in the yard is a rat highway and a safety problem.
• Structure. Damaged cladding, a gap under a fire door, broken wall tiles that have become a harbourage, and ceiling tiles out of place above the dry store. The opening and extra checks in the pack already ask you to look for damage that could let pests in. That line is useless if nobody owns the repair.
• Outside. Bins with lids that fit, standing on hard ground rather than a pool of leak, away from the door where you can manage it. Vegetation cut back so it is not a bridge to a window. Pallets, cardboard and unused equipment not stacked against the wall. That clutter is where rats nest between visits.

Proofing fails quietly. The brush seal wears, the closer is disconnected because it slammed, the mesh is pushed aside for a cable and never put back. Add those items to the extra checks you already owe the diary, at a frequency you will keep. Many kitchens look at proofing monthly and after any building work. Write the date and what you found, including "yard door brush intact, pipe plate still tight". A blank month reads as a month you did not look.

Food, waste and deliveries

Pests need food, water and a hiding place. You will not remove every hiding place in an old building. You can remove the easy food. At close, Safer Food, Better Business expects food to be covered, labelled where it needs a date, and put away. An open hotel pan of cooked rice on the side is a pest problem and a temperature problem. Cover it and get it into the fridge, or throw it away if it has already sat out. Do not leave cereal, cake or bread on an open tray "for the morning" unless it is in a sealed container in a room you have proofed.

Dry goods belong in lidded tubs once the bag is open, with the date and the product name on the tub. Do not pour new flour on top of old flour. That hides beetles and resets nothing. Use the old product first, and if it shows insects, webbing or a sour smell, throw the tub away and wash the container before you reuse it. Check the best-before dates you actually rely on. A sack that has lived under the shelf for a year is a habitat. Keep deliveries off the floor, on shelves with a gap so you can see behind them. A row of boxes pushed to the wall is where droppings collect unseen.

Check goods before they go into store. Torn packaging, insects in a fold of a sack, droppings on an outer carton, and a van that smells of mice are reasons to reject the delivery or to quarantine it until the supplier collects it. Do not "use the clean bags from the same pallet" if the pallet has live insects. Stored-product pests move. Note the supplier, the product and what you refused, in the same spirit as a rejected chilled delivery. The delivery guide covers temperatures. Pest damage is the other half of the same doorstep decision.

Waste is the other feeding station. Food waste leaves the kitchen often enough that it does not overflow, and external bins stay lidded. A bin that cannot close because the liner is overfilled is an invitation to flies and foxes, and then to the rats that follow. Cardboard is flattened and removed. It is nesting material, and it hides the floor you are supposed to check. Clean under and behind bins. The leak at the bottom of a wheelie bin, left on the yard, will feed a colony that your internal traps will never finish.

Water matters as much as food. A dripping pipe under the sink, a mop left wet in a bucket, and a blocked floor drain are drinking points. Fruit flies breed in the slime in a drain and in the drip tray under a cold drink machine. Those are cleaning jobs with a pest result. Put them on the cleaning schedule at a frequency that matches how quickly they soil, and do not let "when someone remembers" be the frequency.

What staff check, and when

Split the looking into two rhythms, the way the pack already suggests. Every day you open, someone walks the rooms where food is stored and prepared and the bin area, looking for the signs above. It takes a few minutes if the floors are clear enough to see. It takes nothing useful if the check is a tick in the office while the kettle boils. The person who opens should be able to see behind the bins they are about to use. Once a week, or at the extra frequency you have written, someone does the slower walk: door seals, pipe gaps, the yard, the ceiling void you can safely see, the inside of the dry-store corners, and the fly-killer tray.

Say who does it. "All staff" usually means nobody. The opener owns the daily look. A named manager owns the extra check and the contractor folder. People on the close own covered food, empty bins and a back door that actually latches. New starters need this on the first shift, not after they have already swept droppings up because they did not know what they were. Training records should show that the pest safe method was covered. The training records guide is the standard for that note. Asking "what would you do if you found droppings behind the flour?" is a better check than a signature on a sheet they have not read.

Night is when much of the activity happens. If you can do it safely, a look with a torch after the lights have been down, or the contractor's insect monitors, tells you more than a midday glance at a busy pass. Do not send someone into a roof void, a lift pit or a dark yard alone as an informal inspection. The contractor's visit and a disciplined opening check cover most small sites. What you must not do is ignore a cook who says they heard scratching in the ceiling. Write it down and get it looked at.

Contractors, baits and fly killers

Choose a contractor who will inspect, advise on proofing, and treat only where treatment is justified. Membership of a recognised trade body, such as the British Pest Control Association, is a practical way to check that someone is in the trade and insured. It is not a legal badge you must collect. Ask them to leave a site plan, a visit report, and a list of recommendations in language your supervisor can act on. "Proof rear door" is useful. A code on a form that nobody translates is not. Agree a visit rhythm that matches the risk. Many food businesses are visited eight times a year, some more often where there is a history of activity or a building that is hard to seal. A quiet site still needs the routine. Pests do not send a warning before the first dropping.

Bait and monitors must not contaminate food. Toxic bait does not belong on an open shelf, in a pan, or where it can fall into flour. Tamper-resistant bait stations, fixed and mapped, are the normal approach outside and in non-food areas. Inside food rooms, many contractors use non-toxic monitors rather than poison, so a mouse cannot carry bait into a sack. Do not move a station because it is in the way of a delivery. If a station is in the wrong place, tell the contractor and record the move. Do not top the boxes up from a tin a previous manager left under the sink. Pesticides are hazardous. They fall under the control of substances hazardous to health, they must stay in their original containers, and they must be stored away from food. Staff do not decant them into drinks bottles, and they do not spray aisles of open food because a fly was annoying a customer.

Aerosol insecticides from a supermarket are a common way to make this worse. The spray drifts onto work surfaces and uncovered food, it does not reach cockroaches behind a motor, and it gives everyone the feeling that something has been done. If you need an insect treatment in a food room, it is a contractor's job, done when food is put away, with the cleaning that follows written down. Tell the contractor what you have already sprayed. Two treatments on the same day can be a problem for them and for you.

Electric fly killers, sometimes called EFKs or insectocutors, catch flying insects. They do not catch mice, and they do not replace a lidded bin. Position them so they draw insects away from open food and from the pass, not above a preparation table where dead flies can drop into a bowl. Empty the catch tray before it overflows, on a frequency you have written, and change the tubes on the life the manufacturer states. A tube can still glow after it has stopped attracting insects properly. A fly killer in the window, facing the street, can draw insects in rather than catch the ones already inside. Put it where the contractor recommends, and do not hang it over the salad because that was the free space on the wall.

Read the recommendations. A report that says "seal the gap at the pipe, fit a door brush, remove cardboard from the yard" is a list of your jobs, not a list of theirs. Book the work, write the date it was finished, and have the next visit confirm it. Leaving the same three lines open for a year is one of the clearest ways to show an officer that the contract is a piece of paper. If a recommendation is wrong for the building, say so and agree an alternative. Silence reads as a refusal to maintain the premises.

What to do when you find activity

Act on the shift you find it. Cover or move food that is still safe so the area can be dealt with. Identify what is contaminated: anything with droppings on it, anything gnawed, anything in an open container next to that activity, and any dry goods with insects or webbing. Throw that food away. Write what it was and roughly how much, so the loss is visible and nobody "rescues" the rice later. Sealed cans and jars that are undamaged can usually be wiped and kept. Open bags cannot be sorted by eye.

Do not dry-sweep droppings. They fragment and the dust moves. Follow the contractor's advice on cleaning, which is normally a damp clean and then disinfection of the surfaces once the source is dealt with. Wash your hands after cleaning that area. Do not use the cloth from the raw-meat board, and do not then wipe the sandwich board with it. If you suspect rats in a void, do not pull a panel off and improvise. Call the contractor the same day. A routine visit in three weeks is not soon enough once you have fresh droppings in a food room.

The diary note needs four things: what you found and where, what food you discarded, who you called and when, and what will change so it is harder for the pest to return. "Pest problem, contractor called" is too thin. The corrective action guide is the shape of that note: the problem, the immediate action, and the prevention. If you closed a section of the kitchen, say when it reopened and why that was safe. If customers could have eaten food from the affected shelf, say what you did about the food already served. Guessing that "it was probably fine" is not a decision.

Keep the team informed without drama. The opener the next day needs to know the dry store is restricted and the yard door must latch. A note on a phone that the manager takes home is not a handover. Put it where the diary lives. At the 4-weekly review, look at every pest line since the last review: outstanding proofing, repeat droppings in the same place, and any recommendation still open. Repeat activity in the same corner means the first fix did not work. Change the fix. Do not order another spray and leave the hole.

What to record

You do not need a novel for a quiet week. You need a set an officer can follow without you narrating it.

• The safe method. The pests you get in this building, who checks, how often, the contractor's name and number, where the folder is, and the rule that staff report signs on the same shift and do not spray open food.
• Opening checks. A real look, with a comment when something was wrong. A year of identical ticks, next to droppings the officer can see, damages confidence in management more than a page that says "droppings found, see diary".
• Extra checks. Proofing, the yard, the fly-killer tray, and the dry-store tubs, at the frequency you wrote down.
• Contractor documents. Contract, visit reports, site plan of bait points and monitors, and the list of pesticides used if the contractor leaves one. Keep them where the supervisor can find them during service, not in a box at the accountant's office.
• Recommendations closed. The date the door brush was fitted, the date the pipe was plated, the date the cardboard was removed. The next report should not still be asking.
• Diary exceptions. Sightings, droppings, rejected infested deliveries, food thrown away, and any day you had to stop using a room.

Keep the papers for the period your local authority expects and long enough that a complaint can still be traced. A folder that starts the week of the inspection is obvious. The food safety documents guide includes pest-control reports in the pack you should be able to put on the table. Store chemicals and pesticide details away from food, and do not pin a bait map to the wall above the pastry bench where it becomes a splashy relic. The office folder and a copy of the emergency number by the diary are enough.

What environmental health officers check

Officers often start outside. Lids off the bins, a gap under the back door, cardboard against the wall, and a drain with no cover tell them what the inside may look like before they reach the pass. Inside, they look under equipment, behind the fridge, in the dry store, along pipe runs and at the top of wall tiles. They compare that picture with the opening checks. Then they ask for the contractor folder.

• Whether staff can describe the signs and know who to call today, not "the manager who left".
• Whether the last report is recent, and whether recommendations have been done or are dated and booked.
• Whether bait points match the plan, and whether poison or sprays could contaminate food.
• Whether fly killers sit away from open food, and whether the trays are emptied.
• Whether dry goods are sealed, off the floor, and free of insects, webbing and gnawed bags.
• Whether proofing is intact: door seals, pipe gaps, screens, and doors that are not propped.
• Whether the diary shows the last time something was found, including the food you threw away.

A live infestation in a food room is a serious hygiene failure. It is also a management failure if the checks were ticked and the recommendations were ignored. Officers score what they see and what they believe you will do tomorrow. The inspection checklist sets out the wider visit. Pest control will not rescue a kitchen that also has no cleaning record, but a kitchen with good temperatures and mice behind the flour will not collect a comfortable score either. Show the work: the sealed hole, the discarded sack written in the diary, and a cook who knows the rule.

Worked example

A neighbourhood café opens at 8am. The safe method says the opener checks the dry store, the kitchen floor edges, and the bin area for pest evidence, and that any sign is written in the diary before service. Dry goods are in lidded tubs. There is a contractor eight times a year. The yard door is supposed to have a brush seal and must not be propped.

On Tuesday the opener finds fresh droppings along the skirting behind the flour shelf, a gnawed corner on a paper sack of rice that never made it into a tub, and a gap around the waste pipe where the wall meets the yard. Nobody sees a mouse. That is still activity. They stop using the shelf. The rice sack, an open bag of oats beside it, and an open bag of pasta on the same shelf go into the waste. The amounts are written down. Undamaged tins from the shelf above are wiped and moved to a clean shelf. The rest of the open dry goods in that cupboard stay quarantined until the contractor has looked, because the run may be wider than the first glance.

At 8:40 the manager phones the contractor and books a visit for that afternoon, not the routine call in three weeks. The diary says: "Fresh droppings behind dry-store flour shelf. Rice sack, open oats and open pasta binned. Tins wiped and moved. Contractor called 8:40, visit today. Gap at waste pipe. Yard door not to be propped." Service continues from food that was not on that shelf. They do not spray the store with a domestic aerosol. They do not dry-sweep the droppings into the prep sink.

The contractor finds a low-level run from the yard, sets external bait stations, and uses non-toxic monitors inside the food store, marked on a plan left in the office. The recommendations are a metal plate around the pipe, a brush seal on the yard door, and cardboard removed from beside the bins. The manager fits the brush that afternoon because a spare was already on site, moves the cardboard, and books a fitter for the pipe plate on Thursday. Both actions go in the diary. Thursday's note says the plate is on and the gap is closed. The next contractor visit finds no new droppings and closes the recommendation.

At the 4-weekly review the manager adds two lines to the extra checks: the pipe plate and the door brush. The rice no longer lives in a paper sack. The opener who found the droppings is the example they use when they train the new Saturday cook: you do not need to see the mouse, you need to stop the food and make the call. That is a working pest-control method, including the food they did not serve.

Common mistakes

• Ticking "no pests" without looking behind boxes, under equipment or in the yard.
• Propping the back door for ventilation and calling the brush seal a waste of time.
• Filling a pipe gap with foam and never checking whether it has been chewed out.
• Pouring new flour onto old flour, or leaving open sacks on the floor.
• Spraying a supermarket insecticide over open food and uncovered surfaces.
• Hanging a fly killer directly over the preparation bench.
• Moving bait boxes, or refilling them from an unlabelled tin under the sink.
• Ignoring the same proofing line on three contractor reports in a row.
• Dry-sweeping droppings, then wiping the sandwich board with the same cloth.
• Waiting for the routine visit after fresh droppings in a food room.

Where this comes from

This guide follows the Food Standards Agency's Safer Food, Better Business safe method on pest control, the opening and extra checks that ask you to look for pest evidence and for damage that could let pests in, and the Agency's description of rodents, insects and birds as the pests food businesses have to plan for. The underlying duty to protect food from contamination, to proof and maintain the premises, and to remove waste before it attracts pests, comes from assimilated Regulation (EC) No 852/2004. The Agency's pages on Safer Food, Better Business for caterers and on setting up your food business premises are the public starting point, including the pest-control safe method in the pack. Scottish businesses should follow Food Standards Scotland and CookSafe. Put your own rooms, contractor, proofing list and corrective actions into the safe method your team is trained on, and check at the 4-weekly review that the building still matches the folder.