Bats in Ohio There are 13 species of bats found in Ohio. The most commonly encountered bats are the little brown bats and big brown bats. Bats natural roosting locations are caves and mines, but bridges and attics share similar aspects for an ideal maternity roosting location. Unlike rodents, bats cannot create their own entrance. They take advantage of gaps and cracks in your home. Bats will roost in your home for one of two reasons. During the winter, some species will hibernate. During the summer, bats needs a safe place to give birth. Signs of Bat Problems A homeowner entered their attic and discovered a mess. Initially the homeowner was concerned about rodents. After an inspection, we discovered the droppings were guano. Bat guano is the surest sign you have bats and the greatest risk to your health. A large accumulation of guano can lead to structural issues and spread two fungal diseases. Bat Removal The most humane way to get rid of bats is to let them evict themselves. A bat valve allows bats to fly out of your attic but prevents them from returning. We can start the exclusion process at any time. We want to identify all potential entry points. Bats can enter a hole smaller than a quarter. Once the pups can fly on their own, we install a one-way door (bat valve). The bats can leave on their own but cannot return. Once we ensure all bats are gone, we remove the bat valve and seal the entrance.