Mice in the house: safe first steps

Protect the food, find the access and keep control measures out of reach.

The answer in 2 lines. Droppings, gnawed packaging and scratching can indicate mice. Put food and animal feed into securely closed containers, remove crumbs and inspect accessible entry points. Clean droppings damp, wearing gloves; do not sweep or vacuum them dry. Traps must be suitable for the animal and protected from children, pets and other wildlife. Poison needs particular care and should never be scattered loose. In England, householders must not use rodent glue traps. If you rent, report the infestation and any repair defects in writing.

What to do first

Record the signs: photograph droppings, damaged packets and possible access points without handling the material.
Protect food: close containers securely, clear crumbs and remove accessible pet food and bird seed.
Inspect safely: look around pipes, doors and damaged vents without moving gas appliances or disturbing electrical fittings.
Plan control and repairs together: secure suitable traps against accidental contact, or arrange professional assessment if you cannot do this safely.

Stop: danger

Suspected poisoning: follow the NHS poisoning instructions. Call 999 or go to A&E if someone may have swallowed, touched or breathed in something harmful. Call 111 if unsure whether it is harmful. Keep the product packaging and do not induce vomiting.
A pet may have eaten bait or a poisoned rodent: seek immediate veterinary advice and provide the product information if available.
Damaged wiring: keep away from exposed or gnawed cables and arrange a qualified electrician. Do not investigate live equipment.

Clean droppings without raising dust

Keep children and pets away while you clean. Wear household rubber gloves and use damp kitchen towel or a wet wipe to lift droppings. Do not sweep or vacuum urine, droppings or nests: this can put contaminated material into the air. Clean affected surfaces with a suitable disinfectant, following its dilution, contact-time and rinsing instructions. Wash your hands afterwards.

The UK Health Security Agency's rodent hygiene guidance includes a cleaning section explaining these dust precautions. Its page concerns pet rodents, but explicitly addresses mouse and rat droppings. Seek professional advice for extensive contamination or inaccessible nesting material.

Remove food and close access

Check beneath cupboards, inside food storage areas and around accessible service openings. Mice can use small gaps, so an obvious hole is not necessarily their only route. Clear clutter that conceals activity and keep rubbish contained.

Arrange durable repairs rather than relying on a temporary plug alone. Do not block ventilation, interfere with gas pipework or seal an unidentified wildlife access point. Where activity is inside walls or shared service ducts, let a professional assess control and proofing together.

For a household checklist, use Oldham Council's mouse advice to review food storage, access and cleaning. Its booking arrangements apply locally, not across England.

What not to do

Using rodent glue boards: they are not a lawful DIY option in England.
Scattering poison, making homemade bait or using a professional-only product.
Setting an exposed trap where a child, pet or other animal can reach it.
Assuming that catching a mouse has repaired the route into the building.

Choosing control safely

A suitable mechanical trap avoids leaving poisoned bait in the home, but must still be positioned and covered to protect others. Follow its instructions and check it regularly. Do not choose live capture without knowing how to check the trap and deal humanely and lawfully with a captured animal.

Read GOV.UK's pest control rules before using traps or poison; its guidance explains permitted methods and protecting other wildlife. The official glue-trap guidance confirms the England licensing restriction.

If poison is proposed, ask why it is necessary and how bait, carcasses and leftovers will be managed. Use the HSE label checklist to check the target pest, permitted user, location and precautions. Keep children and pets away from all bait.

If you rent, who deals with it?

Tell your landlord promptly, with photographs and details of suspected entry defects. Responsibility depends on the cause: repair defects, an infestation present when you moved in, and whether the home is fit to live in all matter. It is not automatically the tenant's bill.

Use Shelter England's pest guidance to check your circumstances and the steps for reporting unresolved problems. Mention shared hallways, cupboards or neighbouring flats where relevant. Do not stop paying rent. The housing advice and glue-trap rules here concern England; Wales, Scotland and Northern Ireland have different frameworks.

Good to know

Ask for identification if you are unsure whether the signs come from mice, rats or another animal.
For council assistance, follow the local council link on GOV.UK's pest control page; check coverage, charges and what follow-up is included.
Persistent activity needs both control and prevention, particularly where several homes share access routes.

Illustrative example: in Manchester, Nadia finds gnawed cereal packaging beneath a cupboard. She protects the remaining food, photographs the signs and reports a damaged vent to her landlord. A pest controller assesses safe trapping and the repair needed, while Nadia cleans accessible droppings damp and keeps checking for fresh signs.

A made-up story, for illustration.

Bobby

Sources, verification, confidence

Verified on 5 November 2026, for England. Confidence: high for hygiene precautions, pesticide safety and the restriction on rodent glue traps; medium for responsibility in an individual tenancy, which depends on the facts. No treatment price, clearance deadline or universal professional certificate is claimed.