If you hear fluttering in your ceiling at dusk and see small birds flying from your home, you likely have bats in the attic. You might also hear this noise at dawn also. Bats gravitate to tight warm spaces, so an attic is perfect for them. They can enter into any tiny hole, but it's important for the health of your family to evict them as soon as possible. This guide explains how to exclude bats and how to prevent them from entering your home again.