The cellar spider is often found in damp locations like basements, crawl spaces and cellars, which is how it got its common name. Male and female cellar spiders may be found in climate-controlled structures year round.

Are cellar spiders dangerous to humans?

Cellar spiders are not poisonous, although the correct terminology would be venomous, which they also are not. Cellar spiders are not medically important spiders because they are not known to bite people.

Should I kill cellar spiders?

Both build webs where they lie in wait for prey to get caught. Cellar spiders sometimes leave their webs to hunt other spiders on their turf, mimicking prey to catch their cousins for dinner. ... So killing a spider doesn't just cost the arachnid its life, it may take an important predator out of your home.