UTAH

Why spiders come inside in the fall and how to prevent it

Oct 19, 2022, 5:00 PM
spiders inside Utah...
Image of a cellar spider, one of the most common spiders seen in homes in northern Utah (USU Extension)
(USU Extension)

SALT LAKE CITY — The patio equipment, the summertime outdoor toys and sometimes, spiders, come inside when the temperatures start falling in Utah.

If and when they do, USU officials say it’s because the spider is nearing the end of its life, looking for mates and a place to lay an egg sack.

Since they are small, it may not be easy to tell exactly what kind of spider has moved into the basement. But not to worry. Nick Volesky with the Utah State University Extension Integrated Pest Management team said most of the species that are native to Utah don’t pose a risk to humans.

“Common spiders you may see this fall include cellar spiders, wolf spiders and hobo spiders,” Volesky said.

The cellar spider finds dark, cool and moist places to stay. They can be confused with the recluse spider — also known as brown spiders, fiddle-backs, violin spiders, and reapers — Volesky said because of the “violin” pattern behind their eyes. While the recluse spider bite can be dangerous, cellar spiders pose no danger to people, he said.

Wolf spiders and hobo spiders are also found inside Utah homes in the fall.  Unlike other spiders, wolf spiders will stalk and pounce to capture prey.

Hobo spiders, one of the most common indoor spiders in northern Utah, are not thought to be harmful to humans. USU Extension reports they get a lot of phone calls about the hobo spider from concerned residents. 

To keep spiders out of your home, seal any exterior cracks and screen all doors and windows. Inside, reduce clutter in basements and garages, and keep these areas dry.

And keep in mind that spiders benefit humans by eating other insects. Conversely, birds and other animals eat spiders. And, most spiders are not aggressive.

If a spider bites you and your body has a reaction, USU Extension recommends that you call your doctor. 

Hobo spider (USU Extension)

Wolf spider (USU Extension)

Other reading:

 

Today’s Top Stories

Utah

Dozens of residents were displaced after fire at a low income apartment complex in Richfield, Utah....
Mark Jones

American Red Cross of Utah seeks volunteers in central Utah

The American Red Cross of Utah is seeking volunteers in central Utah after a fire in Richfield earlier this week displaced 35 families.
3 days ago
Zion National Park officials say one woman died this week, while a man suffered from hypothermia. T...
Mark Jones

One person dies on hike at Zion National Park, another hospitalized

A woman died this week during a hike at Zion National Park with her husband, park officials say. The two got caught in cold weather Tuesday night into Wednesday.
3 days ago
On Thanksgiving Day, Crave Cookies donated to the Utah County Jail and The Salvation Army hosted me...
Waverly Golden

Thanksgiving Day donations and volunteering

On Thanksgiving Day, Crave Cookies donated to the Utah County Jail and The Salvation Army hosted meal preparation and delivery to Utah families.
3 days ago
kaysville one way arson investigation...
Mark Jones

Kaysville house fire started in dryer, emergency officials say

The Kaysville Fire Department says a house fire Wednesday started in a dryer.
5 days ago
Gail Halvorsen, the Berlin Candy Bomber, poses for a photo in the backyard of his Provo home days b...
Waverly Golden

Utahn helps non-profit with modern day “Candy Bomber” operation

In memory of "The Candy Bomber," a fundraiser hopes to supply Christmas presents to refugee children in Berlin and Ukraine.
5 days ago
Dozens of residents were displaced after fire at a low income apartment complex in Richfield, Utah....
Jessica Lowell

Richfield apartment fire evacuees have to leave hotel they were sheltering in

Some of the evacuees of the Richfield fire will no longer be allowed to stay in the short-term option they've been in for the last two nights.
5 days ago

Sponsored Articles

Happy joyful smiling casual satisfied woman learning and communicates in sign language online using...
Sorenson

The best tools for Deaf and hard-of-hearing workplace success

Here are some of the best resources to make your workplace work better for Deaf and hard-of-hearing employees.
Team supporters celebrating at a tailgate party...
Macey's

8 Delicious Tailgate Foods That Require Zero Prep Work

In a hurry? These 8 tailgate foods take zero prep work, so you can fuel up and get back to what matters most: getting hyped for your favorite
christmas decorations candles in glass jars with fir on a old wooden table...
Western Nut Company

12 Mason Jar Gift Ideas for the 12 Days of Christmas [with recipes!]

There are so many clever mason jar gift ideas to give something thoughtful to your neighbors or friends. Read our 12 ideas to make your own!
wide shot of Bear Lake with a person on a stand up paddle board...

Pack your bags! Extended stays at Bear Lake await you

Work from here! Read our tips to prepare for your extended stay, whether at Bear Lake or somewhere else nearby.
young boy with hearing aid...
Sorenson

Accommodations for students who are deaf and hard of hearing

These different types of accommodations for students who are deaf and hard of hearing can help them succeed in school.
Young woman receiving laser treatment...
Form Derm Spa

How facial plastic surgery and skincare are joining forces

Facial plastic surgery is not only about looking good but about feeling good too. The medical team at Form Spa are trained to help you reach your aesthetic outcomes through surgery and through skincare and dermatology, too.
Why spiders come inside in the fall and how to prevent it