Some spiders favour humidity and are therefore found in the damp parts of buildings such as sub-floors, crawl spaces, and under decks. A good example is the Tunnel Web spider which lives in damp areas, but often ventures inside houses where it gets lost and becomes dehydrated. Other spiders prefer dry and warm places such as areas near the ceiling or inside the roof space. They feed on insects and on other spiders. A good example of one of these is the White-tail spider.