Cellar spiders seem to fare better in areas with higher relative humidity. These spiders build loose, irregular, tangled webs in corners, and hang upside down on the underside of them. The webs are not cleaned but rather new webs are continually added. This habit can result in extensive webbing in a relatively short time. When disturbed on its web, the cellar spider has the habit of rapidly shaking its body in a rotary movement to confuse and entangle the prey.
Long-bodies cellar spiders and their webs are usually found in dark and damp places, such as cellars, basements, and crawl spaces. They can also be found in the corners of garages, sheds, barns and warehouses, on eaves, windows and ceilings, and in closets, sink cabinets and bath-traps.
Cellar spiders do not pose a threat to humans, as their weak mouthparts keep them from injecting venom into humans.