Of course! Seal every gap, crack, and hole in your house. Pay particular attention to the roof lines – fascia boards, gable vents, dormer peaks, soffit eave gaps, etc. Any gap of 1/2 to 1 inch is especially desirable. Bats can’t chew, so caulk or polyurethane sealant works great! Of course, if you already have bats in your attic, then you can’t seal the holes shut yet. Visit our Bat Exclusion & Bat-Proofing Page to find out how to keep bats out of your home.