Little brown bats and big brown bats are the two most common bats that invade structures in Ontario. Bats often infest a home by entering through holes and cracks around the soffit, fascia, roof flashing and vents.
Any holes 1/4 of an inch and up can be a potential entry points for bats. Once in, bats will roost in attics, wall voids, chimneys, leaving droppings and urine which creates molds, destroying insulation and drywall. This becomes a health risk, and is both physically and emotionally draining. Bats are also known carriers of rabies, ticks and mites.