If you’ve ever walked into a dark corner of your basement and spotted a big, fuzzy spider skittering away, you know the immediate panic that sets in. Or maybe you’re just tired of finding tiny cobwebs strung across your kitchen windowsill every single week. A lot of people swear by peppermint oil as a cheap, natural way to keep spiders out of their homes — but does it actually work? And more importantly, how do you use it without messing up your space or accidentally hurting yourself or your pets? Let’s break this down totally honestly, no fancy jargon included.
Does Peppermint Oil Actually Repel Spiders?
Okay, let’s get the big question out of the way first: yes, peppermint oil can work to keep spiders away. I know, I know, you’ve probably tried a ton of random home hacks that fizzled out, but this one actually has some science behind it. Spiders aren’t insects, but they still have super sensitive smell receptors all over their legs and bodies. The strong, sharp scent of peppermint oil messes with those receptors big time — it’s like walking into a crowded, loud coffee shop when you’re trying to focus on a work call, but way worse for them.
On top of that, some of the active compounds in peppermint oil are slightly toxic to spiders, so not only will they want to avoid walking through it, but if they do come into contact with a strong enough dose, it can even deter them from sticking around. The best part? It doesn’t kill spiders outright, which means you won’t have to deal with finding dead, dried-up spiders in weird corners of your home later. It just encourages them to take their webs somewhere else, which is way more low-stress than most other pest control methods.
Let me throw in a quick pro tip here: not all peppermint oils are created equal. Make sure you’re using 100% pure essential oil, not a fragrance oil or a diluted store-bought spray that’s mostly water and fake scent. The fake stuff won’t have the strong enough aromatic compounds to actually repel spiders, so you’ll just be wasting your time and money. Trust me, I learned that the hard way after buying a $2 peppermint spray from the dollar store that smelled like candy but did nothing to stop the spider family setting up shop in my laundry room.
How to Use Peppermint Oil to Repel Spiders: Step-by-Step
Alright, so you’ve got your pure peppermint oil, now what? A lot of people just dump a bunch of oil into a spray bottle and go wild, but there’s a better way to do it that’ll make the spray last way longer and work more effectively. A lot of folks swear by adding vinegar to the mix, too — and yeah, the anecdotal evidence checks out. Vinegar has its own strong scent that spiders hate, and it helps the peppermint oil mix evenly with water so it doesn’t just sit at the top of your spray bottle.
Here’s exactly how to make your own DIY peppermint oil spider repellent spray, no fancy equipment needed:
- First, grab a clean, empty spray bottle — a 16-ounce size works perfect for this recipe.
- Pour in ½ cup of white vinegar. Not apple cider vinegar, sorry folks, regular white vinegar has a stronger, more consistent scent that spiders hate way more.
- Add 1.5 cups of room-temperature tap water. You don’t need hot water, it’ll just make the oil evaporate faster anyway.
- Now add 20 to 25 drops of pure peppermint essential oil. Don’t skimp here! If you use less than that, the scent won’t be strong enough to keep spiders away. I usually add a few extra drops just to be safe, especially if I’m dealing with a really bad spider infestation in my basement.
- Twist the spray bottle top back on and shake it like crazy for 30 seconds or so. You want the oil to mix fully with the water and vinegar, otherwise you’ll just be spraying straight vinegar in some spots and straight peppermint oil in others.
Once your spray is mixed up, where exactly should you spray it? Focus on all the spots where spiders like to sneak in or build their webs:
- All around your window sills, both inside and outside
- Along the baseboards of every room in your home
- Around door frames, both the front door and any back doors or patio doors
- Inside your cabinet corners and under your sink
- In dark, dusty corners of your basement, attic, or garage
- Any cracks or gaps in your walls or foundation where spiders might be getting inside
Here’s another important note: you don’t need to douse every surface. A light, even mist is all you need. If you spray too much, you’ll end up with sticky, oily spots on your furniture or windows, and the scent might be too strong for you and your family to handle, too. I like to spray once every 1 to 2 weeks, because the peppermint scent sticks around way longer than humans can usually smell it. Even if you can’t smell it anymore, the spiders can still pick it up, so you don’t have to spray every single day.
Side Effects of Using Peppermint Oil for Spiders: What You Need to Watch For
Okay, so peppermint oil is natural, but that doesn’t mean it’s 100% safe for everyone, including your pets. Let’s go over the most common side effects so you don’t run into any surprises while using this spray.
Skin Irritation
First off, peppermint oil can cause skin irritation if you come into direct contact with undiluted oil. That’s why we always mix it with water and vinegar before using it, right? But even the diluted spray can cause mild irritation for some people, especially if you have sensitive skin. If you get the spray on your hands and you start feeling a burning or itching sensation, wash the area with soap and water right away. I’d also recommend doing a patch test first if you’ve never used essential oils before: spray a tiny bit of the mix on the inside of your elbow, wait 24 hours, and if there’s no redness or irritation, you’re good to go.
Respiratory Issues
If you spray a lot of the peppermint oil mixture in a small, closed room, the fumes can be too strong for you to breathe in for too long. You might start feeling dizzy, get a headache, or even have sinus irritation. That’s why you should always open up windows and turn on fans while you’re spraying, and don’t stay in the room while the mist is settling. Also, make sure you don’t spray the mix directly into your face or lungs — yeah, that sounds obvious, but I’ve definitely had a friend accidentally spray themselves in the nose while trying to hit a tricky corner spot, and they spent the next hour sniffling and complaining.
Dangers for Pets
Here’s the big one: peppermint oil is toxic to cats, and it can also cause issues for dogs if they ingest a lot of it. Cats are especially sensitive because they can’t metabolize the compounds in peppermint oil properly. Even if you just spray the mix on a surface, your cat might lick it off their paws later, which can make them sick. The same goes for dogs — they love sniffing and licking every corner of your home, so you’ll want to keep them out of any sprayed areas for at least a few hours until the spray has dried completely. If you notice your pet drooling, vomiting, or acting lethargic after you’ve used the spray, call your vet right away.
Other Quick Tips for Keeping Spiders Away With Peppermint Oil
If you want to amp up the effectiveness of your peppermint oil spray, there are a few extra tricks you can try. For example, you can soak cotton balls in the undiluted peppermint oil and vinegar mix, then place them in small, open dishes around your home. This is perfect for tight spots like inside cabinet drawers or behind your toilet, where a spray bottle might not reach easily. Just make sure you keep the cotton balls away from pets and kids, though, because they might try to eat them.
Another thing: if you already have a spider web up, spray it directly with the peppermint oil mix before you clean it up. This will kill any remaining spiders or eggs inside the web, and it’ll also discourage other spiders from building a new web in the same spot. I like to use a dust mop or a vacuum with a brush attachment to take down the webs after spraying, so I don’t have to touch any gross spider parts.
And hey, if you’re not a fan of the smell of peppermint, there are other essential oils that work similarly to repel spiders! Tea tree oil, lavender oil, and eucalyptus oil all have strong scents that spiders hate, so you can swap them in for peppermint oil if you want a different scent. Just make sure you stick to the same dilution ratio, 20 to 25 drops per 1.5 cups of water and ½ cup of vinegar.
Final Thoughts: Is Peppermint Oil Worth Trying?
At the end of the day, peppermint oil is a cheap, natural, and effective way to keep spiders out of your home without using harsh chemical pesticides. It’s way better for the environment, and you don’t have to worry about your kids or pets getting sick from toxic fumes. Sure, it might not work 100% perfectly for everyone — if you have a really bad spider infestation, you might still need to call an exterminator — but for most people dealing with the occasional spider or cobweb, it’s a total game-changer.
I’ve been using this peppermint oil spray in my home for about six months now, and I’ve noticed a huge difference. I used to find at least 2 or 3 spiders a week in my kitchen and basement, and now I barely see one every couple of months. Plus, the smell is way nicer than the chemical bug sprays I used to use — it smells like fresh mint, not like a factory. If you’re tired of dealing with spiders and you want to try a natural solution, give this recipe a shot. You won’t regret it.
References
1. http://onlinelibrary.wiley.com/doi/10.1111/j.1750-3841.2009.01294.x/full
2. http://pubs.acs.org/doi/abs/10.1021/jf60130a014?journalCode=jafcau
3. https://ir.library.oregonstate.edu/concern/administrativereportor_publications/1j92g759w
4. http://onlinelibrary.wiley.com/doi/10.1046/j.1440-0960.2002.00598.x/full
