The Cellar Spider: A Silent Guardian in Your Home Part of the Pholcidae family, the cellar spider is a harmless creature often found in corners, basements, or ceilings. Despite its delicate appearance, its a skilled predator that helps keep your home pest-free. These spiders feed on insects such as flies, cockroaches, and even other spiders like the recluse or black widow. By doing so, they naturally reduce the number of unwanted pests indoors without the need for chemicals. While their webs can look a bit messy, cellar spiders play an important role in maintaining your homes ecological balance. Instead of removing them right away, consider them quiet helpers working behind the scenes to protect your living space.