You might think that a mouse can’t get into your house. After all, you always keep doors and windows shut and there are no obvious ways in. You’re wrong because a mouse only needs a gap of 5mm to enter your house so there are probably lots of ways a mouse can get in.

Do you think you might have a problem with mice? Read on to learn how to tell if you have mice in your London home.

What’s Wrong with Mice?

Mice feature prominently in our popular culture. Danger Mouse, Mickey Mouse, Jerry Mouse, and many more mouse-based characters are cute and friendly. Why wouldn’t we want them to visit our homes?

Mice are rodents like rats. Some mouse species live side by side with humans, dependent on them for their food and shelter, especially when the weather is cooler in winter.

Mice damage the structure of your home. They chew through wires and cables. The resultant damage can be a fire risk.

They can damage pipes, insulation, and even walls. Mice also damage your belongings including furniture, clothing, and carpets. For such a small animal, mice can be very destructive.

Mice look for food sources and your health’s at risk when they find food in your kitchen and store cupboard. Mice can contaminate your food when they feed on it or touch it. The result can be serious food poisoning, viruses, and parasites for you and your family.

How to Tell If You Have Mice

You may have suspicions that you have mice. These suspicions can arise when you hear about neighbours having mice or if you come across one of the signs. After a little investigation, you could find some more evidence and confirm that you have a mouse problem.

If you do discover that you have a problem the easiest way to get rid of the mice is to contact pest control experts.


The sight of small droppings on the floor in your kitchen may be the first sign that you have mice. They might be deposited randomly but most commonly along skirting boards or under kitchen units. Also, check inside your cupboards and on top of wall units.

The droppings are about 3-8mm long. You may see quite a few droppings each morning. They are dark and are shaped like rice.

Dark Smears

The bodies of mice are covered in a greasy substance. As they move around and touch various surfaces, they deposit some grease wherever they go. You may be able to detect the greasy trails.

Look for the tell-tale marks on floors, skirting boards, walls, and other surfaces. Check stains around cracks, holes, and edges. The marks will betray the regular routes taken by the mice as they seek food in your home.

Mouse Nests

Mice may be visiting your home rather than living in it. They may have a nest elsewhere and come to your home to find food. If they move in, they will build nests.

A mouse nest is constructed from any soft substances the mice can find. This could be insulating materials, carpets fibres, or fluff.

Nests are built in any dry location that the mice have access to. Check lofts, inside cavity walls, under kitchen appliances, below floorboards.


A house can produce lots of noises that are not necessarily a problem. As the temperature rises or falls, the structure expands or contracts and can make noises of various sorts.

The noises that a mouse makes are distinctive. They occur most often at night and are likely to be inside walls, under floors, and in ceilings. These places hide gaps where mice can travel through your home.

Listen in and around your house for scratching noises. Listen in your living rooms as well as in the loft, in basements, and in garages.


Mouse footprints are very small but it is possible to detect them. The mouse’s tail also touches the floor as it runs so this can also leave a track.

If you suspect that there may be mice you can sprinkle some talcum powder or flour where you think they may be passing through. If the mice pass over the powder they will leave tracks. Check the area daily or you won’t know whether the tracks are from an old infestation.

Seeing Mice

It is possible to see mice. They are very secretive and tend to be active at night when they won’t get disturbed. It’s unlikely that you will be able to catch a sight of a mouse by lying in wait but you may see a mouse by chance as it hunts for food.

Dead Mice

A dead mouse is an indication of an infestation. Mice don’t live for very long. A lifespan of about a year means that wherever there is an infestation there are likely to be the bodies of dead mice.

These bodies attract flies and decompose. They are likely to be in inaccessible places but occasionally they are visible.

Smell of Urine

The urine that mice deposit continuously has a distinctive smell. The ammonia smell is persistent and unpleasant. It can indicate a current infestation but it also takes some time to dissipate after the mice have departed.

Act Now

You now know how to tell if you have mice. Do some investigation. If you find that there’s a mouse problem, contact mice control professionals.

Contact us about pest control and request a quote right now.

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