Uncover whether ultrasonic pest repellers effectively combat spiders with in-depth analysis, expert opinions, and practical homeowner tips.
July 28, 2024
4 min read time
This information is reviewed by an independent pest control expert.
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Are spiders making themselves too comfortable in your home?
If you’re like many people, the thought of these eight-legged guests might send shivers down your spine.
In your quest to evict them, you may have come across something called ultrasonic pest repellers.
But do these devices actually work on spiders?
Let’s dig into the details.
Before we get into whether they work on spiders, let’s first understand what ultrasonic pest repellers are.
Ultrasonic pest repellers are small, electronic devices that emit high-frequency sound waves.
These sound waves are usually beyond the human hearing range but are intended to be unbearable for pests like rodents, insects, and, yes, spiders.
These devices operate on a simple principle: disturbance.
The ultrasonic waves are supposed to create an environment that is uncomfortable for pests, compelling them to leave your home.
Here’s how they are supposed to work:

Ultrasonic waves have frequencies greater than 20 kHz, which humans cannot hear.
Different pests are supposed to react differently to these frequencies, which ideally makes them uncomfortable enough to leave your home.
Multiple studies have been carried out to assess the efficiency of ultrasonic pest repellers. Here are some general observations:
Now, let’s get to the main point: do these devices work on spiders? Here’s what you need to know.
Spiders do not have ears, and they don’t have the same auditory capabilities as other pests. Instead, they rely on:
Given that spiders don’t rely on sound in the traditional sense, ultrasonic waves might not be as effective on them. They tend to be more attuned to vibrations and chemical cues.
Ultrasonic pest repellers have mixed reviews from users when it comes to dealing with spiders. Here are some common insights:
If ultrasonic pest repellers aren’t giving you the results you want, there are other methods you can try. Here are some alternatives:
In conclusion, the effectiveness of ultrasonic pest repellers on spiders is still up for debate.
While they might work to some extent, they are not a surefire solution.
Given that spiders rely more on vibrations and chemical signals, alternative methods might be more effective.
13 more replies
Has anyone tried ultrasonic pest repellers to keep spiders away? I’m curious if they actually work.
From my experience, they don’t seem to have any effect on spiders. I had one running for months and still saw spiders occasionally.
Same here, I’ve been using one for a while and didn’t notice any decrease in spider sightings. They might be more effective for other pests though.
I read somewhere that spiders don’t have the same hearing mechanisms as pests like mice or insects, so that might be why.
Exactly, spiders detect vibrations rather than sounds, so ultrasonic waves probably don’t affect them much.
I was wondering too, are there other methods we can use to keep spiders out of the house aside from ultrasonic repellents?
I found that sealing cracks and keeping areas clean helps a lot. Also, using essential oils like peppermint oil can deter spiders.
Peppermint oil works really well for me too! Plus it makes the house smell good.
Ultrasonic repellers didn’t work for me either. What about natural alternatives?
Spiders dislike citrus, eucalyptus, and lavender. Spraying these oils around windows and doors can help keep them out.