Advice
How Mice Get Into Homes and How to Stop Them
Mice can pass through surprisingly small gaps, so understanding their usual entry points is the first step towards keeping them out of your home or business.
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Mice are small, secretive and mostly active at night, so the first clues are usually droppings, gnaw marks and faint sounds rather than a sighting.
Mice rarely announce themselves. They are small, cautious animals that keep to the edges of rooms and do most of their moving about after dark, so a household can have them for weeks before anyone sees one. That delay matters, because mice breed quickly and a handful can become a much larger problem if left alone.
Across Devon we see them in farmhouses on the moor edges, terraced homes in the towns, seaside flats and holiday lets that sit empty between guests. Knowing the signs lets you act while the problem is still small.
The most reliable sign is droppings. Mouse droppings are small, dark and pointed at the ends, roughly the size of a grain of rice, and they are usually found in clusters along walls, inside cupboards and behind appliances. Fresh ones look dark and slightly soft, while old ones turn grey and crumbly.
Other clues tend to appear alongside them. Look out for the following around the home.
Mice come in for the same reasons we like our homes: warmth, food and shelter. As the nights cool in autumn, fields and hedgerows offer less cover, and a warm house with crumbs on the floor becomes very attractive. Coastal storms and wet weather can also push them to look for dry spaces.
They can squeeze through remarkably small gaps, so a house does not need to be run down to be affected. Older properties with settled brickwork, gaps around pipes and loose airbricks are more open to them, but newer homes are not immune.
If you suspect mice, start by finding out where they are active. Put on gloves before touching anything and keep food in sealed containers made of hard plastic, glass or metal. Wipe down surfaces and sweep up crumbs, because removing easy meals makes your home less appealing.
Take note of where you find droppings and noises so you can describe the pattern to us. Keep children and pets away from affected areas, and wash your hands thoroughly after any cleaning.
It is tempting to reach for a quick fix, but some responses make things worse. Do not scatter poison around the house. It can be eaten by pets, children and wildlife, and a mouse that dies inside a wall or under floorboards can leave a smell that lasts for weeks.
Avoid sweeping droppings dry, since this can throw dust into the air. Never try to catch or handle a mouse with bare hands, as they can bite and may carry germs. Blocking holes without first knowing where the mice are can also trap them inside.
Call us if you are seeing droppings in more than one room, hearing activity night after night, or noticing damage to wiring or insulation. Gnawed cables are a real concern, as they can be a fire risk, so do not leave that unchecked.
A trained technician can work out how the mice are getting in, where they are nesting and how many there may be, then choose a safe, targeted treatment. We also advise on proofing the building so the problem does not return. If you run a business that handles food or hosts guests, acting quickly protects your reputation as well as your premises.
Prevention comes down to closing the doors you did not know were open. Check around pipes, vents and the base of external doors, and repair any gaps in brickwork or damaged airbricks. Keep bins lidded and clear fallen fruit and garden clutter away from the walls.
Inside, store food securely and clean regularly under and behind appliances. For holiday lets and second homes, ask whoever checks the property to look for fresh signs between stays, since a quiet empty house is ideal for mice to settle.
Mouse droppings are small, roughly rice grain sized and pointed at both ends. Rat droppings are noticeably larger and blunter. Size alone is not always conclusive, so if you are unsure, take a clear photo and let us identify it. The right answer affects how the problem should be treated.
Mice can contaminate food and surfaces with droppings and urine, and they may carry germs that can make people ill. They also gnaw through cables and packaging. For these reasons, it is sensible to deal with them promptly rather than hoping they will leave of their own accord.
Cold weather does push more mice indoors, but they can be active in a building at any time of year. Warm kitchens, loft spaces and quiet outbuildings suit them all year round, so you should treat any signs seriously whatever the season.
A cat may catch the odd mouse but will not clear a colony hidden in walls or lofts. Ultrasonic devices have not been shown to deal with an infestation reliably. A proper inspection, treatment and proofing is the dependable route.
If you would like a professional to look at the problem, call us on 01392 590 140 or send an enquiry.
Mice can pass through surprisingly small gaps, so understanding their usual entry points is the first step towards keeping them out of your home or business.
Read the guide →Pests follow the seasons, and knowing what to expect in each part of the year helps Devon householders spot problems early and act at the right time.
Read the guide →Call us, message us on WhatsApp or send an enquiry. We will agree the price with you before any work starts.