Bats eat insects, which can make them a welcome presence in some yards. But proper design and placement of a bat house is essential when attracting bats. This birch bat house comes in quality Russian birch plywood for durability. It has a spacious inside chamber to fit 12 to 20 bats. The angled roof of the bat house drains water and helps to keep it warm. If your yard is a favourite bat haunt, add a bat house for endless entertainment and insect removal.