Once mice have found their way into your home, they will do their best to stay hidden and out of sight. They are adept at finding places to hide and small spaces to squeeze into. As a result, mice will often hide in attics and behind walls. Given their propensity for spreading disease, causing damage to property and possession, and even starting the occasional house fire, a mouse infestation in your home is something you need to deal with immediately.
Any unusual scratching or other sounds coming from behind your walls can indicate the presence of mice. Your walls will amplify many of the sounds they make, so it might even sound as if something larger than a mouse is running around behind them.
While mice will happily live behind your walls, they will prefer to make their nests in warmer areas, such as attics and boiler rooms, or near appliances that generate a lot of heat. If you notice any small holes, about an inch or so in diameter, in your homes’ insulation, they might indicate that mice have been tunnelling through your home.
If you do have mice living behind your walls, they will leave all the usual tell-tale signs of their presence throughout your home. In addition to the noise they make, mice will also leave droppings behind. A single mouse can leave as many as 50-80 droppings in a single night. You will often find them inside or on top of cupboards and along skirting boards.
When building their nests, mice will use any soft materials they can easily shred to form a warm, comfortable lining. If a mouse wants to build its nest behind the walls of your home, it will need to scavenge material from around your property.