The first thing to do is determine where the bats are entering the attic. The bat could enter through a vent that has a bad screen, no screen, or a hole in the roof. Bats can access a home from many different places and make their way to the attic. A professional pest control company should assess any problems and eliminate any bats in the attic. Bats will bite if disturbed. Attempting to control bats on your own may result in injury.
You can put up a bat house outside, however, that will not attract the bats from your attic. It is very difficult to encourage bats to leave an attic, even with the use of noise and/or bright lights. Once a bat finds a nice home, they will not leave easily. Licensed and insured exterminators are the only safe way to get rid of the bats in your attic. Pest management plans will include eliminating them and sealing up any areas where they can access the home.
Pest control needs to be done by a professional exterminator who is knowledgeable about bats and their habitat. An exterminator will assess the problem and decide which way is the best for eliminating the bat. This takes some time if it is a pregnant bat. It is even harder to make them leave their home. The bats are nesting and will not leave the nest voluntarily. Proper methods must be used to remove these bats. If you have bats in your attic, you should contact a pest control professional to eliminate them safely for everyone concerned.