The Little Brown and Big brown bat that is commonly known here in the Midwest. These bats roosts usually in homes and structures where they can enter through areas as small as a quarter of an inch. Other dangers associated with bats in structures are from their droppings or feces called guano, where the disease histoplasmostis can be found.


Bat exclusions are needed to remove bats from building and structures. This is done by sealing gaps on the outside of the structures such as cracks, holes, crevices, anything the size of a quarter inch. The bats are then funneled through one-way doors or tubes out of the structure. After this process is complete,a week or ten days, the whole colony has been removed.

DIY: Bat Removal and Treatment

Only trained professionals should provide such a service. Bats are a federally protected species. Inexperienced persons should not attempt to treat bats. Bat removal, to be successful, must be done in a particular set of steps to guarantee success. Closing or sealing the wrong holes can result in part or the entire colony coming into the living quarters of the house or structure.

Bat Damage

What type of damage do bats cause

Bat infestation causes more problems than one may think. For instance, bat urine rapidly decays the structure it saturates. Bats roost in colonies anywhere from 10 to 20 up to the thousands. When these animals have been inside of a structure the amount of guano continues to accumulate and becomes a major health issue.

Dangers of Bat Infestation

The most well-known and feared disease spread from animals to humans is rabies. Bats are the most common carrier of rabies to human host, and for this reason, bats can be considered dangerous.

Signs of a Bat Infestation

  • Bats flying around your house at dusk.
  • Scratching noises in the walls or ceiling.
  • Staining on the side of the house.
  • Guano located on the attic floor or on the exterior window seals or ledges.

Bat Removal

Christmans Wildlife Services removes bats in a humane and safe way. People who are not well versed in correct removal techniques can kill hundreds of bats each year, which is illegal. Bats are protected by federal and state laws because bats are essential to our environment and valuable for insect control, especially mosquitoes.

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Bats in the Attic
More Information about Bat Control