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Mice

Identification, Habits, and Control
Closeup photo of a mouse

About Mice

Species: Mus musculus (House Mouse)
Mice are small, highly adaptable rodents that commonly live inside homes and buildings. They can enter through very small openings and are often found in walls, kitchens, storage areas, and other spaces where food and shelter are available. Because of their size and ability to hide, mice can establish themselves indoors quickly and often go unnoticed until activity increases.

How to Identify Mice

Size

  • About 2 to 4 inches long (body)

Color

  • Gray or light brown

Identifying Characteristics

  • Small body with pointed nose
  • Large ears relative to body
  • Long, thin tail
  • Quick, darting movement

Where You’ll Find Them

  • Inside walls and cabinets
  • Kitchens, pantries, and food storage areas
  • Behind appliances and inside clutter
  • Basements, garages, and storage spaces

Behavior and Risks

Mice are highly active and reproduce quickly, allowing populations to grow rapidly once they establish themselves indoors. A single pair of mice can lead to a much larger infestation in a relatively short time if conditions are favorable. 

Homeowners often notice signs such as small droppings, gnaw marks on food packaging, scratching noises in walls or ceilings, and shredded materials used for nesting. Because mice are primarily nocturnal, activity may be heard more often than seen. Mice constantly gnaw to keep their teeth trimmed, which can lead to damage to food packaging, furniture, insulation, and even wiring. In some cases, this can create safety risks. 

Because they nest close to food sources and hide in tight spaces, infestations can spread quickly throughout a structure. Early signs often indicate a larger hidden population. Without intervention, mice will continue to reproduce and expand into new areas, making the problem more difficult to control over time.