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Walnuts do not scare away spiders.
There’s no scientific evidence that walnuts repel spiders, and placing them around your home won’t send eight-legged visitors running.
If you’ve been wondering “do walnuts scare away spiders?” you’re not alone, because this is one of those home remedies that keeps popping up online.
The truth is that spiders aren’t bothered by walnuts at all, and the idea that walnuts scare away spiders is more myth than fact.
In this post, we’ll look at where this claim comes from, what actually repels spiders, and whether walnuts have any place in your pest control routine.
Do Walnuts Scare Away Spiders? The Real Answer
Walnuts do not scare away spiders, and here’s why this claim doesn’t hold up.
1. There’s No Scientific Backing
No study has ever shown that walnuts scare away spiders.
Spiders rely on vibrations, air currents, and chemical cues to navigate the world, and walnuts simply don’t trigger any fear response in them.
2. Spiders Aren’t Bothered by Walnut Odor
Some people claim that the smell of walnuts scares away spiders, but spiders don’t detect odors the way we do.
They “smell” through tiny sensory hairs on their legs, and walnut compounds don’t register as a threat.
3. The Myth Likely Comes From Confusion
The idea that walnuts scare away spiders probably started because people confused walnuts with other natural repellents like chestnuts or citrus peels.
Chestnuts are sometimes said to repel spiders, though even that claim is weak.
4. Walnut Husks Contain Juglone (But It Doesn’t Matter)
Black walnut husks contain a compound called juglone, which is toxic to some plants and insects.
But spiders aren’t insects, and juglone has never been shown to scare away spiders or kill them.
5. Placing Walnuts Around Won’t Help
If you scatter walnuts in corners hoping they’ll scare away spiders, you’ll just end up with nuts on the floor and spiders still hanging around.
What Actually Scares Away Spiders?
Since walnuts don’t scare away spiders, let’s look at what does work.
1. Strong Smells Like Peppermint and Citrus
Spiders dislike strong scents such as peppermint, eucalyptus, and citrus.
Spraying diluted peppermint oil around entry points can help deter them.
2. Vinegar Sprays
A mix of white vinegar and water can repel spiders because of its strong odor.
Spray it in corners, windowsills, and cracks.
3. Diatomaceous Earth
Food-grade diatomaceous earth damages a spider’s exoskeleton on contact.
Sprinkle it along baseboards and doorways to keep spiders out.
4. Cedar and Chestnut
Cedar blocks and chestnuts are sometimes used to scare away spiders.
They won’t wipe out an infestation, but they may help in small spaces.
5. Keeping Things Clean and Dry
Spiders love clutter and moisture.
Declutter, fix leaks, and vacuum regularly to make your home less inviting.
6. Seal Cracks and Gaps
Block entry points around windows, doors, and pipes.
This is one of the most effective ways to keep spiders from getting inside in the first place.
Do Walnuts Have Any Pest Control Benefits?
Walnuts don’t scare away spiders, but they do have other uses around the home.
1. Walnut Leaves as Garden Mulch
Walnut leaves can be used as mulch, though their juglone content may harm some plants.
2. Walnut Shells for Crafting
Crushed walnut shells are great for crafts and as a natural abrasive.
3. Walnuts as Food
Walnuts are nutritious for humans, but they won’t do anything to scare away spiders.
4. Walnut Oil for Wood Polish
Walnut oil is a popular wood conditioner, but again, it won’t help with spiders.
So, Do Walnuts Scare Away Spiders?
Walnuts do not scare away spiders.
There’s no evidence that walnuts scare away spiders, and relying on them will only leave you disappointed.
If you want to scare away spiders, stick to proven methods like peppermint oil, vinegar, diatomaceous earth, and sealing up your home.
So the next time someone asks “do walnuts scare away spiders?” you can confidently say no, and point them toward remedies that actually work.