Human’s oldest and most well known pest, house mice depend on our presence for survival. So much in fact, that it is rare to find this species in nature. House mice feed on a variety of food sources. They act mostly as scavengers, foraging new areas every day. As winter time approaches, mice may seek new shelter areas if their current home isn’t conducive to warmth. Once mice have found a potential harboarge, they begin constructing a nest. Mice will grab pieces of cloth, cotton, leaves, straw, or any other insulating material and construct a conglomerate sphere. Attic and crawl space insulation often acts as the perfect pre-made nest. Once mice establish themselves in a structure, removal may be tricky. It is best to stop the invasion before it begins.