How To Get Rid Of Yellow Sac Spiders In Car

How To Get Rid Of Yellow Sac Spiders In Car

Yellow Sac spiders are attracted by the smell of hydrogen in your gasoline and often attach their sacs to the fuel vapor line, which can cause engine damage. Fortunately, these troublesome and somewhat aggressive spiders are easy to identify.

They are named literally for their coloration and the unusual cocoon-like web masses they build. Do you know how to get rid of Yellow Sac spiders in your car?

To get rid of Yellow Sac spiders in your car, use a strong aerosol spider-killing spray in the engine area and trunk and then chlorine bomb the car with packages of chlorine used to remove odors. Close the hood, trunk and doors and seal all holes and gaps in order to keep the vapors inside the car to kill the spiders.

Best Way To Get Rid Of Yellow Sac Spiders In Car

The best way to get rid of Yellow Sac spiders in your car is to spray them with an aerosol anti-spider spray and then close up the area where they are living for about two hours to ensure they’ve all died.

Yellow Sac Spiders are nocturnal, and they typically hide during the day, so your car can look like a welcome refuge to build their hidden sacs.

In nature, these clever siders will hide out in leaf piles and other enclosed areas. Always assume there’s more than what you can see to be safe.

I strongly recommend ordering Black Flag Spider and Scorpion Killer Aerosol Spray from Amazon. This two-pack ensures you can keep one in the garage and a backup for your house as well.

Black Flag is a well-known, highly effective brand. Moreover, you can stand back as far as five feet, so you stay safely away from the spiders, and it kills on contact. You’ll be impressed by how strong the spray is.

No products found.

Even when you choose a spray that kills on contact, it’s better to be safe than sorry. Spray the area where you see spiders, such as under your hood, and then close it up.

Please be careful not to inhale any of the aerosols. It’s a smart idea to wear a mask and eye protection and always wait at least two hours before opening things back up again.

How To Get Rid Of Yellow Sac Spiders Naturally

There are several ways to get rid of Yellow Sac spiders naturally. You can opt for glue traps to catch them at home but setting these out in your car is riskier.

I recommend a high-quality spider spray made from all-natural ingredients instead.

Check out Mighty Mint Insect and Pest Control from Amazon if you need a more natural spider remover. This 100% plant-based formula is safe around pets and kids.

More importantly, Mighty Mint has been proven to work in real-world settings, and it’s made from US sourced peppermint.

Mighty Mint Gallon (128 oz) Insect and Pest Control Peppermint Oil - Natural Spray for Spiders, Ants, and More - Non Toxic
  • Safe when used as directed
  • Extra Concentrated for Long-Lasting Protection
  • Natural Ingredients Proven Effective in the Real World
  • Large 1 Gallon Container
  • Powerful Essential Oil

Preventing Yellow Sac Spiders With Essential Oils

The best way to handle spiders is never to have them in the first place. Prevention is the easiest option, and surprisingly, it can smell nice.

Below I’ve listed the natural scents spiders dislike. However, it is vital to use essential oils made from plants and not chemical odors often called ‘scent oil,’ which mimic these natural smells.

  • Peppermint- This is always number one with a bullet. Science and the Farmers Almanac vouch for it. Spiders and numerous other pests are repelled by peppermint oil. You can mix a few drops of this with a carrier oil like grapeseed or sweet almond and spray it in areas where spiders may get inside. Plus, diluted peppermint oil is child and pet safe.
  • Cinnamon- Cinnamon reminds us of the cool season, and it may help people fight off minor viral infections, according to Pub Med. However, this pleasant spice is not so great if you’re a spider.
  • Citronella- Citronella is best known for its effect on mosquitoes, but spiders also dislike it. However, use this solution with caution as it’s not the best for human lungs.
  • Citrus- The pungent smell of citrus oils like lemon and orange evokes pleasant memories for most people, but bugs and spiders hate it.
  • Eucalyptus- Eucalyptus helps you breathe when you’re feeling sick, and it can even help improve memory. However, this essential oil will also help keep spiders out of our car.
  • Lavender- Lavender is often used in soaps, but it’s also included in drawer sachets for the pleasant smell and ability to ward off bugs.

Pro Tip: Always dilute pure essential oils to avoid potential chemical burns. Also, be aware that oils are both flammable and staining.

How To Get Rid Of Yellow Sac Spiders In Car Vents

The easiest way to get Yellow Sac spiders out of your air vents is to make them an inhospitable habitat. Some people take lemon peels and clip them to the vents for a natural citrus oil repellant.

However, I prefer peppermint because it’s been studied more for pest control and has a very long proven track record.

I prefer to keep a Plant Therapy Organic Peppermint Essential Oil bottle from Amazon in the glove box and spray or drip a few drops into the vents every 30 days during spider season.

You’ll appreciate the therapeutic grade oil’s wonderful smell, but more importantly, this essential spider repellant is non-GMO and completely organic.

Best of all, each bottle goes through organoleptic testing and multiple rounds of GC-MS testing by several third-party laboratories to ensure its quality is consistent.

Plant Therapy Organic Peppermint Essential Oil - 100% Pure, USDA Certified Organic, Undiluted, Natural Aromatherapy, Therapeutic Grade 100 mL (3.3 oz)
  • NURTURE YOUR SPIRIT: Add a few drops of our peppermint oil in your diffuser to unleash its fresh, cool and minty scent promoting energy, focus and mental alertness. Its menthol content has a revitalizing effect on the skin. Add it to carrier oils to help relieve sore muscles, tension and discomfort.
  • 100% PURE & ORGANIC: Our premium GMO-FREE Peppermint oil is steam distilled from leaves of Mint Plants (Mentha Piperita) found in India, producing a USDA Certified Organic raw essential oil without additives. Dilute to 1-2% to make lip balm, lotions and body scrubs.
  • BATCH SPECIFIC GC-MS REPORTS ON EVERY OIL: Every bottle of oil from Plant Therapy goes through multiple rounds of testing including organoleptic testing and multiple rounds of GC-MS testing by several third-party laboratories.
  • HIGH-QUALITY AFFORDABLE ESSENTIAL OILS: At Plant Therapy our goal is to positively impact the lives of as many people as we possibly can, by selling such a high quality product at an affordable price. Be confident knowing you are purchasing quality oils at direct-to-consumer prices.
  • CERTIFIED AROMATHERAPISTS ON STAFF: Our customers are our #1 priority and we’d love for you to join the Plant Therapy Family. Our Certified Aromatherapists are happy to help you with all of your Essential Oil questions. We want you to be confident and satisfied with your purchase.

Helpful Tips To Know About How To Get Rid Of Yellow Sac Spiders In Car

No one wants to get bitten by a spider but letting Yellow Sac spiders live and breed in your car is especially bad because they can block your fuel vapor line as well.

If you see venomous insects in your car, especially aggressive hunters like these, it’s wise to get rid of them immediately.

Here are more helpful tips to know about how to get rid of Yellow Sac spiders in the car.

  • The idea of coexisting with all creatures is excellent, but it’s not an intelligent plan to allow venomous spiders to live in your car. According to Big Blue Bug, “When a yellow sac spider bites you, they inject a venom that has a toxic effect on cells and can be poisonous to nerve tissue. The bite usually causes pain and discomfort lasting up to two hours. Many people experience redness, swelling, and burning, and may even experience headaches, nausea, and vomiting.”
  • Because Yellow Sac spiders can retreat into their cocoon-like webs, killing them can be more complicated than it is for other species. When spraying for this type of pest, I recommend spraying heavily and then closing the area because it will give the spider-killing agent time to permeate.
  • Never remove Yellow Sac spiders by hand. It’s safer to assume they could still be alive and wear thick gloves or use a cloth rather than risking your bare skin. Plus, spider poison may not kill you, but it’s never a good idea to get it on your skin.

Final Thoughts

There’s no reason to put up with Yellow Sac spiders in your car. No one wants to get bitten, and they’re just creepy.

Sadly, these spiders love the smell of hydrogen and all the excellent hiding spots in your vehicle. Fortunately, there are plenty of easy ways to prevent and kill Yellow Sac spiders.

Grab a bottle of aerosol spider-killing spray or go the natural route with peppermint and other organic essential oils that repel them instead.

Whichever way you choose to get rid of Yellow Sac spiders, you’ll be safer without them in your car.

Ted Smith

My name is Ted Smith and I’m the creator of I have a passion for educating people about animals and wildlife. I have been working with the National Wildlife Federation for the past 10 years and I became a wildlife blogger to help people become excited about animals and encouraged to care for these wonderful creatures.

Recent Posts