The House Mouse and sometimes the Long-Tailed Field Mouse are found in buildings as they seek the warmth and shelter for nesting sites and food:
Appearance
The House Mouse body length ranges between 60-90mm and the tail can add an additional 100mm. They weigh less than 25g, and their fur colour varies between light brown and grey.
Characteristics
Mice have an acute sense of hearing, frequently using ultrasound to communicate, and are particularly sensitive to any sudden noise. Their presence is usually detected from their dark-coloured droppings or damage to stored foods in the larder, packaging or woodwork.
Habitat
Mice live in nests that they build out of cloth, wool and paper. Nests are often built inside houses, in places such as roof spaces, under floors or in wall cavities, and wherever there is access to a good source of food, especially during the winter. Mice can squeeze through cracks as small as 5mm but mouse holes are normally 20-30mm in diameter. Mice are mainly active at night and can often be heard running about as they search for food.
Diet
Mice are erratic, sporadic feeders, nibbling at many sources of food rather than taking repeated meals from any one item. They do not need free water to drink as they normally obtain sufficient moisture from their food. Their favourite foods are cereal products, although they will eat almost anything.
Mice have been known to spread some nasty diseases to humans such as Salmonella, Listeria, which can cause food poisoning.
These nibbling nuisances have a compulsive need to gnaw in order to keep their incisor teeth worn down to a constant length. Electric cables, water and gas pipes, packaging and woodwork may all be seriously damaged by mice - many instances of electrical fires and floods have been attributed to them.
Mice can ruin an organisation's reputation. If clients and customers spot evidence of rodent infestation in the premises you manage, they are unlikely to want to do business with you.
Property owners have a legal obligation under the Prevention of Damage by Pests Act 1949 to keep premises rodent free, or, if rodents pose a threat to health or property, to report infestations to the local authority.
It is important to get rid of mice quickly, as Mice are adaptable, highly mobile and breed rapidly - this combination can make mouse control a difficult task for the untrained individual.