- 1). Find where the bats are roosting and then look for the entryways, usually an attic, chimney, under shutters and siding, in roof tiles, soffits and eaves. A bat can get in trough an opening as small as 1/4-inch by 5/8-inch. Go out at dusk and observe where they are emerging.
- 2). Attach excluders over every opening. These devices allow bats to exit, but not re-enter. They consist of small pieces of window screen stapled over the opening at the top so the bats can push out to exit. After the bat exits, the excluder flaps shut and he can't figure out how to get back in.
- 3). Leave the exclusion screens in place seven to ten days to give the bats a chance to exit. This will ensure that you get rid of every bat.
- 4). Remove the screens and seal all the openings with caulk, cement, or steel wool or nail small boards over them.
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