Keeping screens on windows and doors will prevent bats from directly flying into the house. Attached garages should have the doors shut at night. Make sure screens are in tact on attic screens and lattice areas. New roofs are sometimes necessary if wood and siding is in bad shape. Bats will fly in and out of structures at sunset and then continue throughout the night as they feed on insects. Bats will not fly in and out in the winter as insects are not there to feed on. In spring, nighttime temps need to reach around 40 degrees to begin feedings for bats.
Bats are very misunderstood mammals and many people fear them for no reason. Most myths and stories about bats are completely unfounded and false. Bats serve a great purpose in nature by controlling insect and mosquito populations. Bats are the most beneficial form of natural pest control.
Many Iowans have had encounters with bats in the home or living area and that is when bats are a nuisance. If bats have established colonies in attics or wall voids it can create a huge problem for home owners. Odors and dead bats make hot days even worse.
The only way to get rid of bats in homes is to do a full blown house inspection and figure out where the bats are getting in. Many times this is easier said than done. Bats are like tiny flying mice so they can get in spaces and cracks up to a ¼ inch. Sealing every crack and crevice is necessary while installing vents that the bats can fly out of. After about a week, the vents can be removed and the openings sealed. Then the attic clean up begin.