Mice in your garage?

Randy Bilesky BScF CPA RPF

President at Go Green
June 19, 2025

🐭 Why So Much Poop?

  • Mice defecate constantly, up to 50–75 droppings per day per mouse.

  • They poop wherever they go—especially along walls, corners, and travel paths.

  • A garage provides food remnants, hiding places, and nesting material, encouraging mice to settle and reproduce.

  • The more mice, the more droppings—so large amounts of feces usually mean an established infestation.


🦠 Diseases from Mice Droppings and Urine

Both feces and urine can harbor dangerous pathogens. Here are some known risks:

⚠️ Diseases Carried:

  1. Hantavirus – transmitted via inhalation of dust contaminated with droppings or urine.

  2. Salmonella – from contamination of surfaces or stored food.

  3. Leptospirosis – from direct contact with urine or contaminated water.

  4. Lymphocytic choriomeningitis (LCMV) – viral infection from exposure to rodent bodily fluids.

  5. Tularemia – rare but possible through contact with infected rodents or their feces.

🧼 Clean carefully: Avoid sweeping or vacuuming dry droppings (it can aerosolize pathogens). Use gloves, mask, and a disinfectant spray before removing any waste.


🧪 Pheromones in Mouse Urine

  • Yes, mice release pheromones in urine, used for:

  • The urine scent acts like a “trail marker,” helping other mice navigate and recognize safe routes.

  • These pheromones attract more mice, reinforcing infestation patterns.


🛠️ What You Can Do

  1. Seal Entry Points: Mice can squeeze through holes as small as 1/4 inch.

  2. Declutter & Clean: Remove nesting sites and food sources.

  3. Use Traps or Baits: Snap traps, electronic traps, or professional-grade baits.

  4. Consider Ultrasonic Devices: Limited effectiveness but may help in combo with other strategies.

  5. Go Green Pest Control Corp. a professional pest control for all and recurring infestations.


🚫 Cleanup Tips (Safely Handling Droppings & Urine)

  1. Wear gloves and an N95 mask.

  2. Spray droppings with disinfectant or bleach solution (1 part bleach to 10 parts water).

  3. Let sit for 5 minutes before removing with paper towels.

  4. Dispose of everything in a sealed bag.

  5. Disinfect the area again after removal.

  6. https://gogreenpestcontrol.ca/mice-in-your-garage/
  7. https://insectandrodentexterminators.com/mice-in-your-garage/
  8. https://www.linkedin.com/pulse/mice-your-garage-randy-bilesky-c9q6c
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