Spiders can be particularly annoying in the home. These pests move indoors in search of food, warmth, mates, and moisture. The presence of other insects in your home is a common reason for spiders to come inside. House Spiders are attracted to dark, small spaces, like wall cracks, corners, air vents, and in the eaves of your home. Some species prefer to stay closer to the outdoors, weaving their webs in your shed, back yard, or near your outside lighting. Most spiders are a nuisance primarily because of their webbing and because many people have an inherent fear of them.