Mice carry a variety of disease causing bacteria such as Salmonella and Listeria, which they transfer to foodstuffs and food preparation areas. They also cause physical contamination through hair and droppings being deposited in or on foodstuffs. Mice also cause building damage by gnawing through a variety of building structural materials, including pipes and electrical cables, which can cause flooding and fires. Proprietors of buildings and food producing establishments have a legal obligation to rid their premises of rodent infestation. Other reasons for control include loss of reputation and goodwill, fear and financial loss.
The body length of the House Mouse ranges between 6-9cm, and the tail can add an additional 10cm. They weigh less than 25g, and their fur colour varies between light brown and grey. Mice are normally nocturnal, sightings during the day may indicate that you have a heavy infestation. The House Mouse will produce about 80 droppings per day, these are scattered around the premises. Each dropping is 3- 7mm in length, spindle shaped and does not crumble. Mice will eat around 3 grams of food per day and do not require water for survival, although they will drink if water is available. When infestations are well established, smear marks may be seen on floor wall junctions or walls that they regularly climb. The smear marks are a result of oil and dirt from the mouse’s body being deposited on to a surface. Shredded packaging or paper may be found where the mice have tried to gain access to food or have used packaging for nesting material. Mice urinate frequently and as a result, a musty odour can be produced.