An attic provides perfect shelter for mice to live in. It is warm, and dry, and keeps them free from predators. It also serves as an area to have babies several times a year. Just like many rodents, mice will store food in your attic. Many homeowners don't believe they can have mice in the attic, because they have never seen them in the house. Mice in your house or basement will feel threatened especially if you have pets. Mice can have plenty of access to food on the exterior of your home and don't need the food source you provide them in the home.