Spiders are often the sign of a more serious insect infestation in the home. Spiders often hide out in cracks and crevices in well-protected undisturbed areas inside or outside of the home such as eaves, vaulted ceiling corners, bookcase voids, under patio furniture or play equipment, etc. Some spiders are attracted to moisture, and can be found lurking in crawl spaces, basements near leaky plumbing or other areas where moisture can be found. Others prefer warm, dry areas such as attics, near air vents and the upper corners of rooms or vaulted ceilings. Spiders can be found year round and their presence is usually detected by visual inspection and the presence of webs in and around the home.