How to Keep Spiders Out of Your Garage

Spiders are mostly harmless, and can even be beneficial to have around. Unfortunately, they still give a lot of people the creeps, and nobody wants a spider infestation. For those who want a spider-free garage, keeping arachnids out can be done in 5 simple steps.

5 Tips on how to keep spiders out of garage

Most spiders in the USA are harmless to humans, and may not need to be gotten rid of. A few spiders in your garage can actually be a good thing, as they mostly prey on other insects and can help to keep pest populations low.

However, a few spider species (namely, the black widow and brown recluse spider) are venomous and can be dangerous if they get into buildings.

Whether you have a heavy spider infestation in your garage, you see a potentially dangerous spider, or you plain don’t like arachnids, here are 5 simple steps to deter spiders from invading your garage.

1. Clean up

remove all spider tenants from your garageThe first thing you need to do is remove all spider tenants from your garage. You can use a vacuum cleaner or a broom to remove spiders, their webs, and their egg sacs. The egg sacs each contain hundreds of baby spiders, so it’s important not to overlook them if you want to eliminate spiders from your garage.

2. De-clutter your garage

Spiders prefer dark, secluded spaces, which is why they are so often found in basements and garages. If your garage is cluttered with cardboard boxes and junk, you are sure to attract spiders. A thorough clean and de-clutter of your garage can both remove spiders and deter them from coming back.

3. Find and fix leaks

Spiders need food and water and are naturally attracted to areas with an abundance of both. Find and remove any potential water sources in your garage, and fix up any leaks to stop moisture from accumulating. If you have other pests in your garage (e.g., flies) this will also attract spiders, so you may need to take further control measures to remove any spider food sources.

4. Seal cracks and install screens

Spiders enter buildings through small cracks, drains, and gaps around windows and doors. If you want to spider proof your garage, you’ll need to seal any gaps in the exterior of the building with caulk. You should also install screens over the garage door and windows, to prevent spiders from sneaking in through tiny holes in the frame.

5. Use a natural spider repellent

natural spider repellentSpider repellents can help to keep spiders (and other creepy crawlies) away from your garage. Insecticidal sprays may be applied around the perimeter of your garage, which creates a ‘barrier’ against pests and helps to deter spiders. The best spider repellents are usually considered to be the insecticidal type, as these are guaranteed to keep spiders and other bugs away.

However, there are natural spider repellents that are reported to work just as well as chemical insect repellents. For example, certain essential oils (such as peppermint oil, tea tree oil, lavender oil, eucalyptus oil, and cinnamon oil) are deadly to spiders and can act as an effective spider deterrent in your garage.

The most common spider types you can find in your garage

Most spider species are completely harmless to humans, but a few definitely aren’t. Therefore, it’s important to identify your spiders before you begin your pest control efforts, so you don’t risk any nasty bites.

House spiders

The common house spider is perfectly harmless, but they love basements and garages and are the most likely cause of your spider problem. American house spiders are small, brown spiders that can grow to the size of a large coin.

Wolf spiders

Wolf spiders sound scary, but they are almost as harmless as the humble house spider. 

They are one of the most common spider species found in invading garages and are usually black or brown in color, with inch-long bodies and hairy legs.

Wolf spiders are not usually dangerous, but they can grow to be quite large and may deliver a painful bite. Some people are allergic to wolf spider venom, and may require medical treatment if bitten.

Jumping Spiders

Jumping spiders are small arachnids (no bigger than one inch), and may be black, brown, or gray in color. They are most easily recognized by their impressive jumping skills. Jumping spiders are generally harmless, but their bites can sting. As with other spiders, their venom can trigger an allergic reaction in some people.

Hobo spiders

Hobo spiders look very similar to wolf spiders – both are brown or tan in color, and both have hairy legs. However, wolf spiders tend to be larger and hobos are a little less hairy. Their bite can be painful but is not usually dangerous.

Brown recluse spiders

Brown recluse spider

Brown recluse spiders are one of two dangerous spider species in the United States. They like dark corners, and will often sneak into houses by stashing themselves away in cardboard boxes, grocery bags, or even clothes.

The brown recluse is also known as the violin spider, thanks to the distinctive violin-shaped marking on its head. A brown recluse usually won’t bite unless it feels threatened, but their venom can cause skin necrosis (i.e., death of skin tissue). If you are bitten by a brown recluse, seek medical attention immediately.

Black widow spiders

The dreaded black widow is the most dangerous arachnid in the USA. Black widows won’t bite humans unless they feel threatened but, if they do, you will need to seek medical attention immediately. The bite itself can be very painful, and their venom contains a neurotoxin that can spread throughout the body. If you find black widows in your garage, your best option is to call a professional pest control company for assistance.

Recommended products to get rid of spiders

There are plenty of products available to get rid of spiders. An insecticidal spray will get the job done fast, but there are plenty of other natural spider control products to choose from.

Spider traps

Sticky spider traps are designed to kill spiders (and other pests) and can be very effective when used in high-traffic areas. They can also be used to monitor a spider problem, so you can see how well your other control methods are working.

Peppermint oil

Peppermint oil acts as a natural insect repellent, and spiders despise the smell, too. Mix a little with water in a spray bottle and spritz your garage to keep spiders out.

Other essential oils that are reported to repel spiders include:

  • Lavender
  • Eucalyptus
  • Cinnamon
  • Citronella


Vinegar is an excellent natural spider repellent and is often used for pest control purposes.

Frequently asked questions

What attracts spiders to my garage?

Spiders generally like dark, sheltered areas with plentiful food and water sources. Your garage may attract spiders if it is cluttered, leaky, has lots of cracks or gaps in the exterior, or is infested with other insects.

Should I get rid of all spider webs in my garage?

spider webs in my garageIf you want a spider free house, destroying their webs is the way to go. You can do this using a broom or vacuum cleaner. However, most people consider spiders beneficial, so if you want to encourage a small spider population to stick around you can leave one or two webs in place.

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