The house mouse is a small rodent with fur ranging in color from brown to gray and a lighter underside. They are about 3” in length, weighs about 1/2 – 1 ounce and have long tails with circular rows of scales. House mice are prolific breeders and are able to reproduce throughout the year, often producing 6-10 litters (5-7 pups per liter) continuously each year when conditions are favourable. House mice live in and around homes, apartment buildings, commercial establishments, abandoned buildings, open fields, farms and agricultural lands. During the spring and summer, house mice could be found living far from human establishments. However, the onset of cold weather each fall causes mice to move into structures to seek shelter and food. A mouse running along a building is drawn by warm air and food odors coming from under doors and other openings on the exterior. Mice have a strong sense of hearing, smell, taste, touch and use their whiskers to feel air movements and surface textures. All they need is about a 1/4” opening to access a structure.Once inside, mice often establish themselves near food storage and food preparation areas, closets, cabinet bases or cluttered areas. They are excellent climbers and will climb electrical or plumbing lines within the walls and even nest within suspended ceilings. They can move along wires, cables, conduit or rope and can jump vertically 12” as well as survive an 8’ fall. Sounds such as gnawing, climbing in walls, running/scratching the upper surface of ceilings, squeaks and damage to storage food are common indicators of mice infestations. Another common sign is the presence of their droppings which are about 1/4? long, dark and pointed at both ends.