Mice are one of the most common pest problems in Toronto and the GTA — especially during fall and winter. By the time most homeowners notice the obvious signs, the infestation is already well established.
8 Clear Signs You Have Mice
- Droppings — Small (3–6mm), dark, pointed at both ends. Found along walls, in cupboards, under sinks.
- Scratching sounds at night — Mice are nocturnal. Scratching in walls or ceilings after dark is a strong indicator.
- Gnaw marks — On food packaging, wooden furniture, baseboards, and electrical wires (a fire hazard).
- Nesting materials — Shredded paper, fabric, or insulation in hidden areas.
- Grease marks along walls — Dark smear marks along baseboards from mice travelling the same paths.
- Musty or ammonia-like odour — Mouse urine has a strong smell, especially in enclosed spaces.
- Footprints or tail marks — Visible in dusty attics or basements.
- Daytime sightings — If you see a mouse during the day, the population is likely already large.
Why Call a Professional?
Hardware store traps rarely eliminate an infestation. A professional exterminator will identify and seal all entry points (exclusion work), place professional-grade bait stations, and follow up to ensure the infestation is fully eliminated. Without sealing entry points, mice will simply return.
AstraHive specializes in mice and rodent control across Toronto and the GTA. Call 905-925-8427 for same-day service.
AstraHive Pest Control is a licensed and insured pest control company serving 75+ cities across the Greater Toronto Area. Call 905-925-8427 for a free quote.