Why Mice Head for Your Kitchen

As the nights draw in and the temperature drops, mice start looking for somewhere warm, dry and well-stocked. Your kitchen ticks every box. It offers heat from ovens and radiators, shelter behind units and appliances, and an almost endless supply of food in cupboards, bins and pet bowls.

Most mouse activity inside a home happens out of sight. A single mouse can squeeze through a gap no wider than a pencil — roughly 6mm — which means a small crack around a pipe or a gap under a skirting board is effectively an open door. By the time you spot droppings or hear scratching behind the kickboards, the mice are usually already settled in.

The good news is that mice are creatures of habit. They follow the same routes, use the same entry points and rely on the same food sources. Break that routine and you make your kitchen far less appealing.

Seal the Gaps That Lead Into Cupboards

Start by finding out how mice are getting in. Go outside after dark with a torch and look at the base of your walls, paying close attention to where services enter the building.

• Pipes and cables: Check under the sink, behind the washing machine and around the boiler. Fill any gap around pipework with wire wool, then seal over it with a suitable filler or mortar. Mice dislike chewing through wire wool, and it stops them pushing past.
• Kitchen units: Look behind the plinths and kickboards. Gaps between the base of a unit and the floor are common highways. Fit a brush strip or seal the void with board cut to size.
• Skirting boards and floorboards: Run a hand along the skirting in pantry areas. Lift a corner of lino or vinyl flooring if it feels loose — mice often run underneath.
• Utility entry points: Where gas, water and drainage pipes pass through external walls, the hole is often far bigger than the pipe. These are prime entry points and should always be packed and sealed.

Aim to seal from the outside in. Blocking an internal gap while leaving the external hole open just gives mice somewhere else to travel.

Check Air Bricks and Vents

Air bricks are one of the most overlooked routes into a home. They are designed to ventilate the cavity under the floor, and older properties often have them at low level, close to ground. A missing or damaged section is an invitation.

Inspect every air brick on the outside of your property. If the holes are larger than about 6mm, fit a purpose-made plastic air brick cover or a sturdy metal mesh with holes no bigger than 5mm. Make sure you do not block ventilation entirely — trapped moisture under the floor causes damp and rot, which is a far bigger problem than mice.

Also check vents for tumble dryers, extractor fans and soil pipes. Where a vent terminates in a wall, the surrounding gap should be sealed with mortar or silicone, and any mesh cover should be intact and free of gaps at the edges.

Store Dry Food So the Mice Cannot Reach It

Cardboard boxes, paper bags and thin plastic packaging offer almost no resistance. A mouse can gnaw through them in minutes, and once inside a bag of flour or a box of cereal it will happily stay put.

• Decant into glass jars: Choose jars with airtight rubber or silicone seals for flour, rice, pasta, cereal, sugar, oats and biscuits. Glass cannot be chewed and airtight seals also keep food fresher for longer.
• Use metal tins for bulk items: Larger quantities of dry goods store well in lidded metal containers. Plastic tubs are better than bags, but determined mice can chew through thinner grades.
• Clear up spillages promptly: Sweep under the toaster, wipe crumbs from the hob and pull the fridge out now and then. A mouse needs very little to survive.
• Check pet food: Bags of dried dog or cat food left open in a utility room are a favourite. Store them in a sealed container and never leave bowls of food down overnight.
• Sort your bins: Use a bin with a tight-fitting lid, rinse recyclables before they go in, and take food waste out daily.

Make the Room Less Welcoming

Mice want cover. They dislike crossing open floor and much prefer to travel along walls, behind appliances and under furniture. Reducing hiding places makes your kitchen far less attractive.

Pull appliances out occasionally and clean behind them. Keep the space beneath cupboards free of clutter, carrier bags and old boxes. Repair any dripping taps — mice need water as well as food, and a slow leak under the sink provides both a drink and a damp, sheltered corner.

If you have a pantry or a cupboard under the stairs, keep it tidy and leave a small gap between stored items and the wall so you can see droppings or gnaw marks early. Being able to spot the signs quickly is half the battle.

Know When to Call in Help

Prevention works best when it is thorough, but sometimes mice are already established behind the units. Look for droppings along skirting boards, gnawed packaging, greasy smear marks along wall edges and a musky smell in closed cupboards. Listen at night for scratching or scuttling.

If you find signs of an active infestation, it is worth speaking to a professional pest controller who can identify the entry points and deal with the problem safely — particularly if you have children or pets in the house. Once the mice are gone, revisit your sealing, storage and tidying routine. A little effort around pipes, air bricks and food storage now will save you a great deal of trouble later on.