How to Keep Bats From Entering a House

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Though bats can be of great help in keeping the mosquitoes around your house under control, you do not want them inside your home. Inside the home, bats can cause various problems and can even carry rabies. If you find that you have bats in the attic or other areas of your home, you will need to take a few precautions to secure your house and make sure that the bats stay out.

Things You'll Need

  • Screens
  • Mothballs
  • Eucalyptus oil
  • Window caulk
  • Search for small holes in your walls or windows where bats may be entering. There are often small holes near the attic area that bats can use to enter the home. Cover all attic windows and vents with screens. If you have a chimney where bats may be getting in, get a screen to cover the top of the chimney as well.

  • Use a bat repellent chemical. Naphthalene is the only chemical approved by U.S. law that can be used to repel bats. This chemical comes in crystal or flake form. Buy it online or from a pest control professional and sprinkle it along the floor of the attic.

  • Fix any damaged window screens. Examine the window screens around your home to make sure they are intact and do no have small holes. If you do find holes in any of your screens, replace them. Use caulk to seal any areas around windows that are have cracks or are not secure.

  • Watch the outside of your home around sunset to determine if there are still bats in your home. When the sun goes down, you will see the bats exiting your home. Watch where they are leaving from to quickly find and fix the hole they are using to get in and out.

Tips & Warnings

  • The New Jersey Department of Health recommends that you wait to fix any holes until after sundown, when all bats have exited the home. This way you know you are not trapping bats inside.
  • Naphthalene is not a permanent solution for the removal of bats. Once the flakes melt away, the bats will no longer be repelled. This method should be used in conjunction bat-proofing your home.

References

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