Rodents like mice and other pests such as spiders, ants, roaches, birds, and bats typically search for a warm place to spend the cold winter months—sometimes inside a home or business. Mice and other critters enter homes and buildings through cracks and holes found in walls, floors, and foundations. Small rodents may also enter through gaps in windows or ceilings, as well as through sewer lines. According to the National Pest Management Association, 37% of homeowners have seen a rodent in their home in the past year.
Mice are well-equipped to get into homes and buildings. Due to their body shape, mice are capable of fitting through holes as small as a dime. If drainage pipes are not properly sealed, mice may enter homes through sink or bathtub drains. They are also known to find their way inside via entry holes around plumbing and oven gas lines. Mice also can jump a foot into the air and are excellent climbers and swimmers.