Common Ways Rodents Enter Through Garage Doors and Windows, and How to Stop Them

Rodents like mice and rats are experts at finding their way into homes, especially through garage doors and windows. Even the smallest gaps can become easy access points, leading to contamination, property damage, and potential health risks. Understanding how rodents enter through garages and windows is the first step toward effective prevention.
Below, we’ll explain the most common entry points and share practical, homeowner-friendly tips to help keep rodents out.
Why Garages and Windows Attract Rodents
Garages and windows are among the most vulnerable areas of any home. Rodents are drawn to these spaces because they often provide:
- Warmth and shelter
- Easy access to food sources
- Gaps, cracks, and worn seals
Once inside a garage, rodents can easily move into walls, attics, and living spaces, often unnoticed.
Common Ways Rodents Enter Through Garage Doors
1. Gaps Under Garage Doors
One of the most common rodent entry points is the small gap at the bottom of a garage door. Mice can squeeze through openings as small as ¼ inch.
Prevention tips:
- Install a tight-fitting garage door sweep
- Replace worn or cracked rubber seals
- Ensure the door fully seals when closed
2. Side and Corner Gaps
Rodents often exploit gaps along the sides or corners of garage doors, especially if the door frame is warped or misaligned.
Prevention tips:
- Inspect weather stripping regularly
- Replace damaged trim or framing
- Seal gaps with rodent-resistant materials
3. Openings Around Utility Lines
Garages commonly house water lines, gas lines, and electrical wiring. These entry points are often overlooked and provide direct access indoors.
Prevention tips:
- Seal gaps with steel wool and caulk
- Use metal or cement-based fillers
- Inspect utility penetrations annually
How Rodents Enter Through Windows
1. Damaged Window Screens
Rodents can chew through weak or damaged screens to gain access, especially to basement or ground-level windows.
Prevention tips:
- Repair or replace torn screens
- Use metal mesh for added durability
- Secure screens tightly to window frames
2. Gaps in Window Frames and Sills
Over time, window frames can crack or pull away from the structure, creating small openings rodents can exploit.
Prevention tips:
- Seal cracks with exterior-grade caulk
- Repair rotting wood around window sills
- Check for gaps seasonally
3. Basement and Crawl Space Windows
Low-level windows are especially vulnerable due to proximity to soil and vegetation.
Prevention tips:
- Keep shrubs and plants trimmed away
- Install window well covers
- Ensure windows close and lock properly
Additional Rodent Prevention Tips for Homeowners
Blocking entry points is crucial, but full rodent prevention requires a proactive approach:
- Store pet food and bird seed in sealed containers
- Keep garages clutter-free
- Avoid leaving garage doors open overnight
- Maintain proper drainage to reduce moisture
- Schedule routine pest inspections
These steps significantly reduce the chances of rodents nesting in or around your home.
When DIY Prevention Isn’t Enough
Even small, hard-to-see openings can allow rodents inside. If you’re hearing scratching noises, finding droppings, or noticing gnaw marks, it’s time to call a professional.
Buzz Kill Pest Control provides expert rodent inspections, exclusion services, and long-term prevention solutions. Our trained technicians identify hidden entry points and stop rodents at the source. We also offer the following services:
- Ant Control
- Bed Bug Exterminator
- Commercial Pest Control
- Exterminator
- Flea Exterminator
- Mosquito Control
- Pest Control
- Roach Exterminator
- Spider Pest Control
- Termite Control
- Wasp Removal
Contact Buzz Kill Pest Control
Don’t wait until rodents cause damage to your home.
Contact Buzz Kill Pest Control today for a professional rodent inspection and customized prevention plan. We’ll help secure your garage doors, windows, and other vulnerable areas to keep rodents out for good.
