Castle Exterminators
House Mouse (Mus musculus) identification infographic showing size, habitat, behavior, risk, and control
High concern

House Mouse

Mus musculus

Size
7–10 cm body
Category
Rodents

About the house mouse

The house mouse is the most common indoor rodent in North Carolina. Adults can squeeze through gaps as small as a quarter-inch, climb walls and pipes, and breed rapidly — a single pair can produce dozens of offspring in a year. They contaminate food with droppings and urine, chew electrical wires (a leading cause of mystery house fires), and spread salmonella, hantavirus, and allergens. Effective control requires sealing entry points + traps + bait stations + sanitation.

Quick ID

7–10 cm body plus equally long tail; greyish-brown fur, large ears, pointed snout.

In the Triangle

Universal in Triangle homes during fall and winter when temperatures drop — especially in homes with attached garages or older crawl spaces.

Think you have house mouses?

Free inspection from a licensed Castle Exterminators technician — Durham, Chapel Hill, Raleigh, Cary & the Triangle. We'll confirm the species and recommend a treatment plan.

Request Free Inspection (919) 606-8686