The Little Brown and Big Brown bats roost usually in homes and structures where they can enter through areas as small as a quarter of an inch. These small little animals live in colonies, sometimes small, five to ten bats, and sometimes large, ranging from several hundred to several thousands. A bat proofing process is needed to resolve any situation where a building, home, or structure is infested with this type of animal. Most homeowners make the mistake of sealing entrances and openings to prevent bats from gaining access into their structure, but in a many cases, seal areas that the bats are using to go out of the structure. When this is done it will force the entire colony of bats down through the living quarters of the house, which can be a very messy and dangerous situation.Bat exclusions are needed to remove bats from buildings and structures. All of the cracks, holes, crevices, anything the size of a quarter inch or more are sealed, and then bats are funneled through one-way doors or tubes out of the structure. After this process is complete (a week to ten days) the whole colony has been removed.