Rodent (Rats and Mice) Control in Food Premises

Rodents are a serious food-safety risk because they carry pathogens, contaminate food and surfaces with droppings, urine and hair, and can damage packaging and wiring. Under the Food Standards Code, food premises must be kept free of pests as far as practicable. The practical answer is exclusion first (seal gaps and doors), remove food and harbourage, monitor with tamper-resistant stations, place any bait away from food, and keep dated records of every sighting and action. Key takeaways: The Food Standards Code requires food premises to be kept free of pests as far as practicable, so rodent control is a legal expectation, not optional.. Exclusion (proofing) is the most effective control: seal gaps 6 mm or larger, fit door sweeps and keep external doors closed.. Never place rodenticide bait near exposed food, packaging or preparation surfaces; use tamper-resistant stations in low-risk areas only.. Monitoring stations, glue-free traps and routine inspections catch activity early before it becomes an infestation.. Keep dated records of sightings, inspections, treatments and your pest contractor's reports as evidence for auditors and council.. Why rodents are a food-safety problem Rats and mice are more than a nuisance in a food business; they are a direct contamination hazard. They carry disease-causing organisms such as Salmonella on their fur, feet and in their droppings and urine, and they move constantly between waste, drains and food areas. A single mouse can leave dozens of droppings a day and dribbles urine as it travels, spreading contamination across shelving, benches and stored ingredients. Rodents also gnaw through packaging, cabling and even water lines, creating both food-safety and fire risks. Under Standard 3.2.2 and 3.2.3 of the Food Standards Code, food premises must be designed, constructed and maintained so they can be kept free of pests, and businesses must take all practicable measures to prevent pests entering and to eradicate any that are present. Rodents can carry Salmonella and other pathogens on fur, feet and in droppings.. Droppings, urine and hair contaminate food, surfaces and packaging.. Gnawing damages packaging, wiring and pipework, adding safety risks.. Council environmental health officers treat active rodent evidence seriously at inspection.. Recognising the signs of rodent activity Early detection is the difference between a quick fix and a full infestation. Rats and mice are mostly nocturnal, so you will usually see the evidence before you see the animal. Inspect regularly, including behind and under equipment, along wall-floor junctions, in dry stores and around bins. Rat droppings are dark, spindle-shaped and up to about 12-19 mm long; mouse droppings are much smaller, around 3-6 mm, and look like dark grains of rice. Fresh droppings are soft and shiny, while old ones are dry and crumbly, which helps you judge whether activity is current. Other tell-tale signs include a musty ammonia-like smell, gnaw marks, shredded nesting material, greasy 'rub marks' along regular runs, and scratching noises in ceilings or walls at night. Droppings: small rice-like grains (mice) or larger spindle shapes (rats).. Gnaw marks on packaging, timber, cabling and door edges.. Greasy rub marks along skirtings and pipe runs where rodents travel.. Nesting material such as shredded paper, cardboard or insulation.. A stale, musty or ammonia-like odour in enclosed storage areas.. Scratching or scurrying sounds in ceilings, walls or voids at night.. Proofing and exclusion: keep them out first The single most effective control is stopping rodents getting in at all. Mice can squeeze through a gap around 6 mm and rats through roughly 12 mm, so even small defects matter. Walk the perimeter of your premises and look for entry points at ground level and above, since rats climb well. Seal gaps around pipes, cables and vents with rodent-resistant materials such as steel wool packed with sealant, metal sheeting or hard-setting filler; foam alone is easily gnawed. Fit close-fitting self-closing external doors with brush strips or metal kick plates, and repair damaged fly screens and vents with metal mesh. Because proofing degrades over time, treat it as an ongoing maintenance task rather than a one-off job. Seal gaps of 6 mm or more; use steel wool with sealant or metal sheeting, not foam alone.. Fit brush strips or sweeps to external doors and keep them closed.. Cover vents, drains and gaps around pipes and cables with metal mesh.. Repair broken screens, cracked walls, damaged skirtings and worn door seals promptly.. Check the roof line and upper walls too, as rats are capable climbers.. Remove food and harbourage Rodents settle where food, water and shelter are easy to reach, so good housekeeping removes the reason for them to stay. Store dry goods in sealed, rigid, rodent-proof containers off the floor and away from walls so you can inspect and clean behind them. Clean up spills and crumbs promptly, degrease equipment regularly, and never leave food out overnight. Manage waste tightly: use bins with tight-fitting lids, empty them often, keep the bin area clean and positioned away from doors, and rinse recycling before storage. Outside, cut back vegetation, clear rubbish and unused equipment that offers cover, and fix leaking taps and drains that provide water. Reducing clutter indoors and out also removes nesting sites and makes monitoring far easier. Store dry goods in sealed rigid containers, off the floor and clear of walls.. Clean spills, crumbs and grease promptly; never leave food out overnight.. Keep waste bins lidded, emptied often and away from external doors.. Remove clutter, cardboard and unused equipment that offers harbourage.. Fix leaks and clear outdoor vegetation and rubbish that give food, water and shelter.. Baiting and traps: keep them away from food Where control agents are needed, placement and product choice are critical in a food environment. Rodenticide bait must never be placed near exposed food, packaging, ingredients or food-contact surfaces, because of the contamination and poisoning risk. In and immediately around food-handling areas, non-toxic monitoring blocks and mechanical snap or multi-catch traps are generally preferred; where toxic bait is used it belongs in tamper-resistant, secured and clearly labelled stations placed in lower-risk zones such as external perimeters and non-food storage. Avoid glue boards in food premises, as they are widely discouraged on welfare grounds and can shed contamination. Always follow the product label, which is a legal instruction under agricultural and veterinary chemicals law, and record the location, product and batch of everything you place. For anything beyond minor activity, engage a licensed pest management technician who can select and place products correctly and legally. Never place bait near exposed food, packaging, ingredients or food-contact surfaces.. Prefer traps and non-toxic monitors inside food-handling areas.. Use toxic bait only in secured, tamper-resistant, labelled stations in low-risk zones.. Follow the product label exactly; it is a legal requirement under agvet chemical rules.. For more than minor activity, use a licensed pest management technician.. Monitoring, mapping and routine inspection A control programme only works if you check it. Set up a simple station map or plan showing every trap and bait point with a unique number, so nothing is forgotten and auditors can see your system at a glance. Inspect stations and known runs on a set schedule, look for fresh droppings, gnawing and disturbed monitors, and act quickly on any new activity. Rotate your inspection through different areas of the premises so blind spots do not build up. Combine your own routine checks with periodic visits from your pest contractor, and review trends over time; repeated activity in one spot usually points to an entry point or food source you have not yet closed. Escalate promptly if you see live rodents during trading hours or find widespread droppings, as these indicate an established problem. Number every station and mark it on a premises plan.. Inspect stations, runs and high-risk zones on a regular, documented schedule.. Look for fresh droppings, gnaw marks and disturbed or emptied monitors.. Review trends: recurring activity signals an unaddressed entry point or food source.. Escalate immediately if you see rodents during trading or find widespread droppings.. Records, contractors and what auditors expect Documentation turns your pest control from a claim into evidence. Keep a pest control file that includes your contractor's service agreement and reports, a station map, dated logs of sightings and staff observations, records of proofing repairs, and the details of any product used. Environmental health officers and third-party auditors routinely check that a program exists, that records are current, and that identified problems were actioned and closed out. If you use a professional, confirm they are appropriately licensed for your state or territory, that they use products registered for the setting, and that they leave a written report each visit. Train staff to report sightings straight away and record them, because a near-miss noticed early is far cheaper to fix than an infestation found at audit. Specific licensing and reporting requirements vary, so confirm with your state or territory regulator and local council. Maintain a pest file: contractor reports, station map, sighting logs, proofing records, product details.. Log every sighting and action with a date and the person responsible.. Confirm your contractor is licensed and uses products registered for food premises.. Keep records current; auditors check that problems were actioned and closed out.. Train staff to report and record any sign of rodents immediately.. Checklist: Perimeter walked and entry points 6 mm or larger sealed with rodent-proof materials. External doors self-closing with brush strips or kick plates, kept shut. Vents, drains and pipe penetrations covered with metal mesh. Dry goods in sealed rigid containers, off the floor and away from walls. Spills and grease cleaned promptly; no food left out overnight. Bins lidded, emptied regularly and sited away from doors. Bait only in tamper-resistant stations, away from food and food-contact surfaces. Traps and monitors placed inside food areas instead of toxic bait. Station map maintained with every point numbered. Inspection schedule set and dated logs kept. Pest contractor engaged, licensed and leaving written reports. Staff trained to report and record sightings immediately. Common mistakes: Relying on bait and traps while ignoring the entry points that let rodents in.. Placing rodenticide bait near exposed food, packaging or preparation surfaces.. Using expanding foam to seal gaps, which rodents simply gnaw through.. Leaving external doors propped open during deliveries or busy service.. Storing dry goods in soft packaging or cardboard directly on the floor.. Setting stations but never inspecting them or recording findings.. Treating pest control as a one-off rather than ongoing maintenance and monitoring.. Failing to keep the contractor reports and sighting logs auditors will ask for..