Arete Pest Control

Yellow sac spiders are one of the most common spiders Utah homeowners find indoors, especially as warmer weather pushes spider activity up.

They are pale yellow to greenish with darker feet, build small white silk retreats in corners and behind furniture, and move fast at night. Their bite can cause a local reaction that is sometimes mistaken for a brown recluse bite, even though brown recluse spiders do not exist in Utah at all.

Here is what they look like, where they hide, and when their presence indoors warrants serious attention.

Are Yellow Sac Spiders in Utah Dangerous? Yellow sac spider bites are the most commonly reported bite in Utah. Learn whether they are dangerous and how to get rid of yellow sac spiders.