• Call (800) 479-6583
  • Mon-Fri 8am-5pm
  • |
  • Sat 9am-5pm

How To Control Yellow Sac SpidersYellow Sac Spider

Not the spider you're looking for or you want to learn more? Check out our Spider Control section for more helpful information and DIY spider control products!

A common house spider that is on the rise and becoming an increasing worry for homeowners is the Yellow Sac Spider. The yellow sac spider is a smaller spider standing about a quarter of an inch in length and is called a sac spider due to its habit of sleeping in self-woven silk sacs.

Yellow Sac spiders are a very active species both during the day and at night and have been setting up shop in homes more often in recent years. In the wild, they're normally found in small cocoon type web formations between leaves, brick piles, tree bark and virtually anywhere in the garden. Sac spiders also have a tolerance for the cold, as they may be the rare species of spider wandering outdoors when the temperature drops.

Another reason why Yellow Sac spiders are a worry because of their tendency to be very defensive and prone to bite. People are normally bitten when putting on clothes that the sac spider may have crawled into, but they will bite in virtually any other circumstance, as well. Bites can be painful and can cause swelling around the bite site; weakness in local extremities; fever; nausea; vomiting; cramping; and sometimes even cold or flu-like symptoms that can last quite some time.

If you have yellow sac spiders invading your home, we can help you get rid of them the DIY way by our offerings of high-quality control products and helpful how-to advice.

Browse our Yellow Sac Spider control products below. For more information or questions regarding your order as well as helpful DIY pest control advice, give us a call, chat with us online or email us. We are always standing by and are happy to help.

Why Buy These Products

How to Get Rid of Yellow Sac Spiders: Solutions 3 Step Process

Yellow sac spiders can be a particularly frustrating problem especially if you or someone in your household has suffered from their aggressiveness and biting. The best way to control this pest and keep it away from your home is by making your home less environment less attractive for the Yellow sac spider to be around as well as making your home tougher to access by implementing exclusion measures. It is also important to treat the areas where they like to be active with chemicals. Here are some simple steps we want to share with you if you want to carry out a control program for Yellow sac spiders:

Step 1: Start by closing off access into your home by sealing cracks on the outside of the home and placing screens on doors and windows. Spiders can enter through very small spaces, so thoroughly inspect your home for possible points of entry and use caulk to fill those gaps. Do this both inside and outside, taking away any places that sac spiders can enter or hide. If you make it difficult for them to enter your home, they’ll go elsewhere.

Step 2: Continue working from the outside in by removing scraps and wood piles from your yard. Yellow sac spiders like to lay eggs in piles of debris and make nests. By removing these potential nesting sites, you can send a message to them that they aren’t wanted. We also recommend treating your home exterior by laying out insecticide granules. Using a granule spreader, scatter granules around on your lawn, flower beds and mulch areas. You should also apply an insecticide concentrate to your grass, mulch, flowers, bushes, etc. as well as the home’s siding.

Step 3: Indoors, we recommend treating all your baseboards, around windows and doorways and any other crack or crevices where you think sac spiders might be entering or hiding with an insecticide aerosol spray with a good residual. This product is odorless and goes on “dry” making it a great choice for use inside living areas. We also suggest setting glue traps to catch sac spiders when they are traveling about and are undetected. You can also choose to remove these spiders or their sacs if you find them immediately upon discovery.

More Information about the Yellow Sac Spider

An interesting tidbit that a lot of homeowners will be surprised to know is that among all the types of spiders one may encounter in a home, perhaps the one which is the most common is the Yellow Sac spider.


And what’s even more shocking to note is that yellow sac spiders may be the most common spider that delivers spider bites to humans in the United States more than any other type of spider.


As alarming as that sounds, the yellow sac spider isn’t a spider to be afraid of because despite delivering a painful bite, the yellow sac spider is not venomous and bites do not cause any type of scary symptoms associated with venom bites like that of the notorious brown recluse or black widow spider.


Appearance of a Yellow Sac Spider

The yellow sac spider is about a quarter of an inch long and is between beige to pale yellow in color. The yellow sac spider also has eight eyes, in two rows of four. Yellow sac spiders usually are shipped in cargo on products such as grapes and other fruits and vegetables and you may unknowingly snag one along home with you when you’re shopping for produce at the grocery store.


Behavior of the Yellow Sac Spider

The yellow sac spider derives its name from how it builds its nest, by shooting out webbing not in the traditional way but by shaping their nest in a small tube-like structure which resembles a sac.


Yellow sac spiders go out and hunt for their food, unlike other spiders which build a web in efforts to catch their pray. The sac-like structure which they build is used only as their habitat. Yellow sac spiders are nocturnal so they stay in their sac most of the day and explores at night to forage for food.  


While yellow sac spiders do not actively go in search of human dwellings to infiltrate and roam around, they may find themselves in a home by accident while looking around for food. Yellow sac spiders can also seek the warmth and shelter in our homes during the fall season when temperatures start to drop and it becomes colder.  The rest of the time, Yellow Sac spiders prefer to live outdoors.


When discovered indoors, yellow sac spiders usually build their nests in high places like the upper corners of room, behind picture frames on walls, above window moldings or even behind curtain drapes or blinds. People reported to have been bitten by spiders are usually bitten at night which is when male yellow sac spiders are looking around for food.


Have you been bitten by a Yellow Sac Spider?

While they may startle or look creepy, yellow sac spiders are not dangerous and shouldn’t be feared. Yellow sac spiders only bite humans on rare occasions when they feel threatened or afraid. If you have been witnessing a lot of these spiders around you may need to do an inspection of your home and check your clothing and bed sheets before laying in bed to make sure they aren’t crawling around.


When they have found their prey, yellow sac spiders proceed to inject an insect with a cytotoxin which paralyzes the victim by killing their cells, similar to that of a brown recluse, though the brown recluse has a much stronger and more lethal cytotoxin.


People often confuse yellow sac spider bites for brown recluse bites. Brown recluse bites are much more serious because they take longer to completely heal. Yellow sac spider bites heal at a much faster rate. One can describe the bite of a yellow sac spider to be similar to the stinging pain of a wasp or hornet sting. For those that are particularly allergic or reactionary, the worst case scenario symptoms of a yellow sac spider bite include a fever, headache, chills, dizziness, nausea, and even shock.


Should any of the above symptoms occur, it is recommended to seek medical attention as soon as possible. If you have been bitten by a yellow sac spider, a way to treat the bite is by cleansing the area with the use of hydrogen peroxide and following up with the use of an antiseptic application to lessen or eliminate the risk of infection. In rare instances, the skin around the bite will die, but this is not as common with yellow sac spider bites as it is with brown recluse bites. Applying an ice pack directly to the site of the yellow sac spider bite is also helpful to reduce the pain and swelling.


How To Get Rid of A Spider Nest of the Yellow Sac Spider


If you see any yellow sac spiders or their sac-like nests in secluded corners of your home, it is recommended that you take them down. The best way to get rid of a yellow sac spider nest is not through the use of any pesticide product as it will do little to affect the sac. What we recommend you do instead to eliminate the yellow sac spider nest is by simply vacuuming it up or breaking it down by hand, (using gloves of course) and discarding the nest.


Yellow sac spider nests are small, white and covered with a thin layer of silk and will usually contain eggs of the yellow sac spider. Breaking down yellow sac spider nests is a great method of discouraging yellow sac spiders from rebuilding in the same area or in your home at all.


Methods of Yellow Sac Spider Control

If you spot any adult yellow sac spiders, the method of control we recommend that is effective is using a lethal professional insecticide such as Cyonara 9.7 Insecticide. Cyonara delivers a quick knockdown and rapid kill of any yellow sac spider it comes into contact with. Another option to get rid of the yellow sac spider is to use an insecticidal aerosol such as Cy-Kick Aerosol Insecticide.


If you have found it difficult to detect yellow sac spiders for control, especially since they are nocturnal and are hard to find at night, trapping is also a great way to capture straggling yellow sac spiders. We recommend laying out some Trapper Max-Free Glue Trap in secluded areas and corners, cabinets, cupboard, near baseboards and corners of a room. Check back and you will likely find a yellow sac spider stuck and unable to escape.


If for any reason you do not want to kill the yellow sac spider you can try to capture one you see by placing a clear glass or plastic jar over the yellow sac spider and then use a thin but durable barrier like that of an index card or similar to slide under the jar and simply take the spider outside and release them. No pesticides necessary.


A few preventative measures to keep yellow sac spiders from making themselves at home in your house is to put up screens on your doors and windows and keep your home clutter free, inside and out. The presence of yellow sac spiders may indicate another pest problem that needs addressing like ants, silverfish or roaches which yellow sac spiders may seek out when foraging for food.


Want More Yellow Sac Spider Info?

If you’d like more helpful information about yellow sac spiders, other spider species or any other problem pest, please refer to our knowledge base where we have tons of articles on a variety of different pests and guides on how to control them. You can also get live help and advice by emailing us at askapro@solutionsstores.com, calling our phone number at 800-479-6583 or contacting us on our website to live chat with us!

Contact Us