House mice consume and contaminate food meant for humans, livestock, or other animals. They cause damage to structures and property, and they transmit diseases such as salmonellosis and swine dysentery. Recognizing Mouse Infestations Droppings, fresh gnaw marks and tracks indicate areas where mice are active. Mouse nests, made from fine shredded paper or other fibrous material, often are found in sheltered locations. House mice have a characteristic musky odor that identifies their presence.
Mice are active mostly at night, but can be seen occasionally during daylight hours.
House Mouse Facts House mouse, mus musculus House mice are small rodents with relatively large ears and small black eyes. Although house mice usually feed on cereal grains, they will eat almost anything. They are sporadic feeders, nibbling bits of food here and there. Mice have keen senses of hearing, smell, taste and touch. They are excellent climbers and can run up any rough vertical surface.