Bats are usually able to exist near human homes without making their presence known. However, with decreasing amounts of habitat available for bats (e.g., trees being cleared), bats may find their way into man-made structures. Bats use existing openings (cracks as small as 1 ΒΌ inch by 3/8 of an inch) to enter buildings or to roost in attics.
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.
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.
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
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.
Is it dangerous to have bats in your house? Bats can also damage your home. They can chew into walls, damage insulation or damage wiring as well. Bat guano is a carrier of the fungus histoplasma capsulatum. Another serious risk from bats, although rare, is the possibility of a bat transmitting rabies to a human from a bite.
Is it bad to have bats around your house? Bat droppings, called guano, can cause health issues in humans, bats can get into the living area of a home, bat infestations left unchecked can lead to damage to the home as the weight of the guano can affect the attic floor/living quarters ceiling. The guano can also attract insects into the home.