Where Do Mice Usually Hide Indoors?

Extension sources establish that a house mouse normally travels within an area only about 10 to 30 feet in diameter and "seldom" ranges farther for food or water; where food and shelter are abundant, the foraging range may shrink to just a few feet. That short range is the key practical insight: droppings, gnaw marks, or rub marks mark the neighborhood of the nest, which is usually within a wall void or concealed cavity nearby, not somewhere across the house.

Common indoor harborage includes wall voids, spaces behind and beneath refrigerators and stoves (which give off warmth), the backs of base cabinets and pantries, attic and crawl-space insulation, basements, and cluttered storage boxes. Nests are built in sheltered locations from finely shredded paper or fibrous material. Because mice prefer to travel tight against walls and edges, runways — and the traps you place — should follow baseboards and vertical surfaces rather than open floor.

A single home can host several independent nests in different rooms, since each mouse or family group stays close to its own local food source. That's why droppings in the kitchen and droppings in a bathroom cabinet across the house don't necessarily mean one mouse traveling widely — they more likely mean two separate populations.