To eliminate bats, you must find and remove the colony from your house. Most bats you’ll see are worker bats, which forage for food. They might travel long distances to enter your home or workplace for food. The only way to get rid of these bats is to kill them. These bats leave behind a trail of chemical or pheromones that other bats can follow to your house. It will be a constant battle. It is safer to call a professional pest control company to find the bat colony and exterminate it from your attic.