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House Mouse

The house mouse is the most common rodent in Montreal homes. It can squeeze through openings as small as a dime.

House Mouse

Identification sheet

Appearance
Small rodent with grey-brown fur and a lighter belly. Large ears and a long thin tail.
Size
6 to 10 cm (body) + 7 to 10 cm (tail)
Color
Grey-brown
Habitat
Walls, attics, basements, pantries. Prefers warm spots near food sources.
Lifespan
1 to 2 years
Danger level
Moderate

Health risks

Mice contaminate food with their droppings and urine. They can transmit salmonellosis, hantavirus and other diseases. Their gnawing damages electrical wires and can cause fires.

Signs of infestation

  • Small black droppings (3 to 6 mm) along walls
  • Scratching noises in walls at night
  • Gnaw marks on food packaging
  • Persistent musky odor
  • Nests made of shredded materials
  • Grease marks along baseboards

Prevention tips

  • Seal all openings larger than 6 mm
  • Store food in airtight containers
  • Keep kitchen and dining areas clean
  • Eliminate standing water sources
  • Store firewood away from the house
  • Install weatherstripping under doors

Think you have house mouse?

Contact us for an inspection and free quote. 24-hour maximum response time.

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