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Dealing With Yellow Sac Spiders In Idaho


yellow sac spider

As a trusted local pest control company, we understand the importance of keeping your home and family safe from these arachnids. We will provide valuable information about yellow sac spiders, their behavior, and effective ways to prevent and control infestations. Read on to learn more!

Understanding Yellow Sac Spiders: (Are Yellow Sac Spiders House Spiders?)

Long-legged sac spiders and yellow sac spiders (Cheiracanthium Inclusum) are a common species found in Idaho, the United States, and many other regions across North America. These species of spiders are tiny, ranging from 1/4 to 1/2 inch in length. They are named after the sac-like webs they build for shelter, their egg sacs/egg masses. They are typically light yellow or pale greenish, with some sporting a stripe running down their back, blending effortlessly with their surroundings.

Habitat and Behavior: (Where Do Yellow Sac Spiders Like To Live?)

Yellow sac spiders prefer to live in environments close to humans, such as houses, garages, sheds, and other structures. They are particularly active during the warmer months. At night, these spiders mostly hunt for prey, including other insects. They are known to be fast and agile, capable of running swiftly when disturbed.

Bites and Health Concerns: (Do Yellow Sac Spiders Bite Humans?)

While yellow sac spiders are venomous, these types of spiders’ bites are rare and typically occur when the spiders feel threatened or trapped. Bites may result in redness, swelling, and a mild to moderate burning sensation in human skin. In some cases, allergic reactions or secondary infections can occur, which may require medical attention. However, it’s important to note that yellow sac spider bites are infrequent and generally not a significant health concern.

Prevention Tips:

Preventing these from entering your home is the first line of defense. Here are some effective prevention measures:

  • Seal Entry Points:

Inspect your home for cracks, gaps, and openings that spiders can use to gain access. Seal them with caulk or weatherstripping.

  • Reduce Outdoor Lighting:

Spiders are attracted to light sources, so consider using yellow or sodium vapor lights, which are less attractive to insects and spiders.

  • Clear Clutter:

Remove piles of debris, firewood, and vegetation around your home’s perimeter. These areas provide hiding spots for spiders.

  • Regular Cleaning:

Keep your home clean and free of dust, webs, and clutter. Vacuum regularly, paying attention to corners, windowsills, walls and ceiling, and baseboards.

  • Natural Predators:

Encourage the presence of natural predators, such as birds, which help keep spider populations in check.

If you suspect or notice an infestation of yellow sac spiders in your home, it’s advisable to seek professional pest control services. At Barrier Pest Control, we have the expertise and knowledge to effectively identify, treat, and prevent spider infestations. Our experienced technicians use safe methods to ensure the well-being of your family and pets.


Understanding yellow sac spiders and implementing preventive measures can significantly reduce the chances of encountering these arachnids in your home. You can ensure a spider-free environment by following the abovementioned tips and seeking professional assistance. At Barrier Pest Control, we are here to help you with any pest-related concerns. Prevention is vital, so take action today and enjoy a pest-free home tomorrow!

Give Us A Shot!

Because of who we are, our history, our commitment to the future, our guarantee, and the specific standards that we hold ourselves to, we are confident that you will want to do business with us. Give us a call at (208) 463-4533 to request a quote! We are open Monday through Friday, 8 AM – 5 PM.

Service Area (Southwest Idaho)

Our pest control services are also available in Boise, Garden City, Eagle, Emmett, Meridian, Kuna, Nampa, Melba, Middleton, Star, Marsing, Homedale, Caldwell and Mountain Home.