If you like to spend some time relaxing outdoors, the last thing you want to see is a big spider nearby. Even though spiders are really helpful, we know they’re still pretty frightening when they get too close. While you’ll never be able to completely get rid of spiders outside, there are still so many things you can try to keep them away. Keep reading for a ton of helpful ideas for keeping your patio clean and safe!

This article is based off an interview with our MMPC-certified pest control specialist, Kevin Carrillo. Check out the full interview here.

Method 1
Method 1 of 13:
Spray chestnut or mint essential oils in problem areas.

  1. 1
    Strong odors could deter spiders from hiding spots near your patio. Some studies have shown that essential oil works effectively as a natural repellent.[1] Add 5–7 drops of a peppermint or chestnut oil to 2 cups (470 ml) of water in a spray bottle. Spray along the edges of your patio and anywhere else where spiders might like to hide, such as along your home’s foundation or in any dark holes or gaps nearby.[2]
    • Rosemary, lavender, eucalyptus, and citrus essential oils may also be effective.
    • While there haven't been many scientific studies about vinegar being effective for spiders, it doesn't hurt to try spraying it around your patio's perimeter.
    • Citrus and peppermint oils are poisonous to cats, so avoid using them if you have any pets nearby. If you’re concerned about using other essential oils, ask a vet if they’re safe around your pets.[3]

Method 2
Method 2 of 13:
Spread diatomaceous earth around your patio.

  1. 1
    Diatomaceous earth dries spiders out and kills them on contact. Diatomaceous earth (DE) is a powdery substance that cuts through a spider’s exoskeleton and kills it. Spread some DE around problem areas, like any dark corners or cracks on your patio. Since rain and wind will remove DE, just be sure to reapply it if you have bad weather.[4]
    • You can buy DE from your local garden store.
    • Diatomaceous could be harmful if it gets on your skin or in your lungs. Wear a mask, safety glasses, and long-sleeved clothing when you apply it.[5]

Method 6
Method 6 of 13:
Move any clutter off your patio.

Method 7
Method 7 of 13:
Turn off your outdoor lights.

  1. 1
    Keep your patio dark to stop attracting other bugs. The main thing drawing spiders toward your patio are other bugs they're trying to hunt.[12] Since exterior lights attract bugs at night, spiders will usually build their webs nearby. Only turn on your outdoor lights when you need to or get motion sensors so they’re not on the entire time.[13]
    • If you can’t turn off your lights, try switching to a yellow bulb instead. Bugs aren’t as attracted to yellow lights, which may mean there won’t be as many spiders.
    • If you can, reposition any exterior lights on a post that’s away from your home and patio so you keep the spiders away.

Method 11
Method 11 of 13:
Seal cracks and gaps on your home.

Method 13
Method 13 of 13:
Apply pesticides as a last resort.

  1. 1
    Residual pesticides can help, but they’re not as effective outdoors. You only need to use chemical pesticides if you have a large spider infestation.[20] Opt for a pyrethroid pesticide that contains bifenthrin, cyfluthrin, permethrin, or tetramethrin since it’s the most effective for killing spiders. Spray the area around your patio with the pesticide, following the instructions on the packaging and focusing on dark holes or cracks where spiders hide.[21]
    • Chemical pesticides could be harmful to children and pets.[22]
    • Remember, spiders are beneficial since they hunt other pests, like flies and mosquitoes, so you don’t need to get rid of them completely.[23]

Warnings

  • If you’re bitten by a spider while you're cleaning your patio, try to see what the spider looks like and call a doctor to get advice.[26]

About This Article

Kevin Carrillo
Written by:
MMPC, Pest Control Specialist
This article was written by Kevin Carrillo and by wikiHow staff writer, Hunter Rising. Kevin Carrillo is a Pest Control Specialist and the Senior Project Manager for MMPC, a pest control service and certified Minority-owned Business Enterprise (MBE) based in the New York City area. MMPC is certified by the industry’s leading codes and practices, including the National Pest Management Association (NPMA), QualityPro, GreenPro, and The New York Pest Management Association (NYPMA). MMPC's work has been featured in CNN, NPR, and ABC News.
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Co-authors: 6
Updated: December 13, 2021
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Categories: Spider Control