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

Identification sheet
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.
