Where bats get in

How bats get into your home.

In Ontario, most residential bats (more than 95%) are big brown bats (Eptesicus fustus).

Bats can enter though gaps as small as an inch wide by quarter-inch high.

The average home in Ontario has thousands of potential entry spots (especially up high).

Big brown bats live in millions of Ontario homes.

Most colonies are small (30 or fewer bats); bats are nocturnal, quiet and shy, and can go undetected for years.

Bats are year-round residents that thrive in our climate-controlled homes.

In winter, they hibernate in cool spots in basements and exterior walls.

Bats live primarily in interior walls, which offer protection and stable temperatures.