Deer mice are commonly found living in forests, fields, and agricultural lands. They typically will only be found in homes and other buildings that are located next to those types of habitats. Deer mice are nocturnal and during the day they hide in their nesting areas, coming out overnight to feed. They typically feed on items including seeds, fruits, invertebrates, fungi, and nuts. In the fall when food is plentifully they gather and store food near their nests to consume over the winter months.
If deer mice do find their way into a home or other building they typically live and nest in attics and behind wall voids. Inside of homes and businesses they can create a lot of damage by chewing through wires, pipes, drywall, insulation, and flooring; along with damaging personal items like clothing, furniture, books, and pictures. They also leave a trail of urine and feces throughout your home as they travel through it.