If the bat(s) are living in your attic, chimney, and unfinished basement, or out buildings, you should try to bat proof the living space of your home or consult with a private pest control company who can help you prevent the bats from entering living spaces. It is illegal to kill or hire anyone to kill bats. thoroughly examine your home for holes that may allow bats entry and caulk any openings larger than 1/4 inch by 1/2 inch. Use window screen, chimney caps and draft guards beneath doors to attics. Fill electrical and plumbing holes and check for holes or tears in the HVAC ducts.