Many species return to the same nesting sites year after year because they recognize those locations as safe, resource-rich environments where they have successfully raised young before. Birds, bats, and other wildlife rely on memory and instinct to revisit familiar shelters, often ignoring deterrents if the structure remains accessible. This behavior means that once animals establish a nesting spot in an attic, crawlspace, or wall void, the chances of repeat infestations are extremely high without proper exclusion measures. Long-term solutions require sealing entry points, repairing damage, and making the space less attractive so wildlife cannot continue the cycle season after season.