How Do Mice Get Into Houses in Spokane Homes?

Mice are incredibly flexible and persistent. They don’t need a large opening—just a small gap they can squeeze through.

👉 If their head fits, their body can follow.

This is why infestations often happen even in homes that appear “sealed.”

1. Gaps Around the Foundation

The foundation is one of the most common entry points.

Look for:

• Cracks in concrete
• Gaps where siding meets the foundation
• Openings around crawl spaces

These small gaps often go unnoticed but provide easy access for mice.

2. Gaps Under Doors and Garage Doors

Doors are a major weak point, especially if they aren’t tightly sealed.

• Worn or missing weather stripping
• Gaps under entry doors
• Garage doors that don’t fully seal

Mice frequently enter garages first, then move into the home.

3. Openings Around Utility Lines

Anywhere pipes or wires enter your home is a potential entry point.

Common areas include:

• Plumbing lines under sinks
• Cable and internet lines
• HVAC penetrations

These openings are often larger than necessary and rarely sealed properly.

4. Attic and Roof Vents

Mice don’t just stay low—they climb extremely well.

They can access:

• Rooflines
• Attic vents
• Soffits and eaves

Once inside the attic, they can spread throughout the home quickly.

5. Cracks in Walls and Siding

Exterior walls can develop small gaps over time.

• Damaged siding
• Warped materials
• Expansion gaps

These create hidden entry points that are easy for mice to exploit.

6. Crawl Spaces and Basement Access Points

Homes with crawl spaces are especially vulnerable.

• Unsealed vents
• Loose access doors
• Moisture-damaged areas

These spaces provide both entry and nesting opportunities.

7. Through the Garage

Garages are one of the most common starting points.

Why?

• Less insulated and sealed
• Frequent door openings
• Easy access to storage and clutter

Once inside, mice look for ways into the main living space.