Make sure that all garbage is stored in animal-resistant containers, as raccoons and other wild animals love to feast on your leftovers. Do not leave leftover pet food outdoors as it will attract raccoons. Make sure outbuildings are secure from invasion by raccoons and skunks looking for a cozy place to stay. Chimneys should be capped, as raccoons like to den in chimneys.
Steps should be taken to exclude bats from houses and other structures by sealing the openings they use. This should be done during the winter (November-March) when bats have left for hibernation. The entry points are often near the roof edge such as under the eaves, soffits, and bands around the chimney. A variety of materials can be used to seal openings including 1/4 inch hardware cloth, fly screening, sheet metal, wood caulking, expandable polyurethane, or fiberglass insulation.