Signs of Mice Infestation in Your Calgary Home
Learn how to identify a mouse problem early. Recognizing these warning signs can save you from costly damage and health risks.
6 Warning Signs You Have Mice
Droppings
Small, dark pellets (3-6mm) near food sources, along walls, or in cabinets. Fresh droppings are dark and moist.
Scratching Sounds
Scratching or scurrying noises in walls, ceilings, or under floors, especially at night when mice are most active.
Gnaw Marks
Teeth marks on food packaging, wood, plastic, or wires. Fresh gnaw marks are lighter in color.
Nests
Shredded paper, fabric, or insulation gathered in hidden areas like behind appliances or in wall cavities.
Grease Marks
Dark smudges along walls and baseboards where mice repeatedly travel, leaving oil from their fur.
Urine Odor
Strong, musty ammonia-like smell, especially in enclosed areas. Indicates active infestation.
What To Do If You See These Signs
If you notice any of these signs, act quickly. Mice reproduce rapidly—a single pair can produce up to 60 offspring per year. What starts as a minor problem can become a major infestation within weeks.
Related: Hearing scratching sounds at night? Learn about mice in walls and why professional removal is critical. Read our complete guide on how to get rid of mice in Calgary fast and permanently.
- Don't ignore even small signs
- Seal food in airtight containers
- Look for entry points around pipes and vents
- Call a professional for thorough inspection