Yes, bats can cause quite a bit of damage to the attic. Their weight and movement from flying around can damage insulation, and they can chew through wiring and the walls. As if this isn’t enough, they leave their droppings throughout, which carry harmful bacteria and is dangerous for humans to breathe in, not to mention the extremely foul-smelling odor.

It is possible, though unlikely, that a home insurance policy will help cover the costs of professional bat removal. However, some policies will chip in for guano removal and associated repairs, such as replacing drywall. Take some time to read the fine print of your homeowner’s insurance policy and call your provider to inquire about bat removal, guano removal, and related repairs.

High-frequency bird repellent devices are effective at driving away birds, which is their intended purpose. However, these devices also tend to have unintended negative consequences. For example, if you or your neighbors own pets, the high-pitched noise emitted by these electronic devices will cause them distress and may even make them aggressive.

DIY animal removal is rarely a good idea and is not advised for many reasons. First, these types of animals can carry diseases and, therefore, pose a health risk to you, your family, and your pets if mishandled. Second, depending on your city or municipality, it may be illegal to remove or handle wildlife yourself. 

Sealing your home against these animals yourself is also a bad idea. Trapping an animal under your house will cause odor and insect problems when it passes away.