Close-up of cellar spider/daddy long leg

5 Common Spiders in Utah

As winter approaches, do you have unwelcomed guests—like spiders—starting to move into your home? If you let them stay, they’ll stay forever. Read our guide to five common spiders in Utah to learn how to keep the creepy crawlies out of your home.

Black Widows

Black Widows are easily identified by the red hourglass on their underside. Their bite is poisonous and can be fatal to young children and seniors. Though black widow bites can be dangerous, black widow spiders are not aggressive and won’t bite unless threatened.

black widow pest

Some bites occur when people are cleaning out garages or moving wood because the spiders build their webs in these areas. Wear thick gloves when working to avoid a harmful bite. If you encounter a black widow, quickly contact a pest control company to get rid of the spiders.

If you’re bitten by a black widow, take the following steps:

  1. Wash the area with soap and water
  2. Apply ice to ease swelling and apply anti-itch cream if needed
  3. Try to elevate that part of the body
  4. Seek medical attention (especially if you’re at heightened risk due to age or previous health problems)

Seek emergency medical attention if you experience any of the following symptoms after a black widow bite:

  • A sharp increase in blood pressure
  • Severe pain (especially chest pain)
  • Uncontrollable muscle spasms
  • A high fever and/or chills
  • Nausea and/or vomiting

Cellar Spiders

Also called daddy long legs, cellar spiders are known for their extensive legs and small body. They often live in dark, cool places like cellars and basements. They build webs in corners of garages, eaves, sheds, and other small spaces. To prevent cellar spiders from invading your home, try the following:

  • Make sure windows and doors are sealed to keep the spiders out
  • Use yellow light bulbs outside the house because cellar spiders are attracted to white light
  • Keep your basement clean and tidy (especially if it’s unfinished)

Cellar spiders are harmless and usually only bite their prey, not humans. If you are bitten by a cellar spider, treat it like any other itchy spider bite:

  1. Wash the area
  2. Hold a cool cloth to the area if needed
  3. Apply anti-itch cream if needed

Crevice Weavers

Crevice weaving spiders make webs in small places such as wall crevices, porches, and eaves. People often mistake them for brown recluse spiders, but brown recluses (a much more dangerous spider) do not live in Utah. Contact a pest control company to treat for crevice weaving spiders and other spider species. To prevent this type of spider from moving in, follow these guidelines:

  • Frequently clean out crawl spaces, crevices, and other small, dark places where they like to hide
  • Properly seal doors and windows to block entrance points

Like most other spiders, crevice weavers have a harmless bite and generally don’t bite people anyway. If bitten, follow the pattern in the previous section to treat it the same way you would treat other spider bites.

jumping spider egor kamelev
Jumping Spider

Jumping Spiders

Jumping spiders are one of the most common indoor spiders in Utah. They are best known for their small size and their tendency to jump. Jumping spiders like to find their prey around windows because their eyesight is better in sunlight, so their webs are often in the corners of windows. Even though jumping spiders bite, it’s not venomous to humans.

When you see one of these spiders in your house, vacuum up the spider and the web. After vacuuming, dispose of the waste outside in case the spider is still alive.

Wolf Spiders

Wolf spiders get their name from the way they catch prey. While other spiders build webs to catch prey, the wolf spider hunts. They stalk, run after, and pounce on their prey. Wolf spider bites are painful, but they are not venomous to humans. Try this to help alleviate the pain from a wolf spider bite:

  • After cleaning the area, cover it with an ice pack or a cold cloth
  • Apply an anti-itch cream
  • Take pain medication if needed

Wolf spiders are most prevalent in the fall months, which is also when they start moving indoors. Inside, they live on main floor levels under couches and other sheltered places. Outside, they live under stones, wood, and leaves. To prevent wolf spiders from entering your home, make sure doors and window screens are secure and free of holes.


Use fake spider webs to decorate for Halloween this year and let Stewarts take care of the real ones! Call 801-226-2261 today for a free Bug Barrier program estimate.