How small of a hole can a bat get through? Most often bats find their way into homes through cracks and crevices in building materials. Their small size makes it easy for bats to tuck themselves into even the smallest of gaps. They can squeeze through holes as small as 6 millimetres or about the size of a dime.
Bats become a nuisance when they roost in large numbers in human dwellings. The rapid accumulation of guano (bat droppings) is unsanitary, and serves as a fertile breeding ground for a fungal disease called Histoplasmosis, which is transferable to humans who breathe in the fungal spores.
Where do bats go after exclusion? Exclusion devices should be placed at all entry points and should remain in place for a minimum of seven days. These devices should be removed after all bats have been excluded, and exclusion points should then be sealed. Bat Con
Do bats eat when they hibernate? Hibernate or Migrate. Bats use a lot of energy flying around and must consume a lot of food, such as insects, to fuel their daily activities. When cold weather drives insects away, bats must choose to hunker down and hibernate or migrate to warmer areas with more abundant food supply. National Park Service
What should I do if I find dead or dying bats, or if I observe bats with signs of White-nose Syndrome? If you find a dead or dying bat: Contact your state wildlife agency, file an electronic report in those states that offer this service, e-mail U.S. Fish and Wildlife Service biologists in your area, or contact your nearest Fish and Wildlife Service field office to report your potential White-nose Syndrome (WNS) observations.
What time of year can bats be removed? In most states, regulators allow bat-proofing and bat removal beginning sometime from early August to late August and continuing until females start caring for young again in early spring, March to May.
Not all wildlife removal companies are the same. Some have experience with bat removal projects, and are familiar with the proper methods for bat exclusion. But others use incorrect techniques, such as bat traps, summer exclusions, or worse, fumigants.