# What Sound Repels Bats
**URL:** https://forums.thanoshome.com/t/what-sound-repels-bats/1232
**Category:** Rodents, Reptiles & Bats
**Created:** [May 21, 2024, 3:13am UTC](https://forums.thanoshome.com/t/what-sound-repels-bats/1232 "2024-05-21T03:13:33Z")
**Posts on this page:** 15
**Page:** 1
### Author:  [@batwave\_expert](https://forums.thanoshome.com/u/batwave_expert)
#### Post date: [May 21, 2024, 3:13am UTC](https://forums.thanoshome.com/t/what-sound-repels-bats/1232/1 "2024-05-21T03:13:33Z")
Hey everyone! I’ve read that ultrasonic devices can repel bats since it confuses their echolocation. Anyone have experience with this?
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### Author:  [@ultrasonic\_advocate](https://forums.thanoshome.com/u/ultrasonic_advocate)
#### Post date: [May 21, 2024, 3:15am UTC](https://forums.thanoshome.com/t/what-sound-repels-bats/1232/2 "2024-05-21T03:15:21Z")
Yes, that’s correct. Ultrasonic sound generators can interfere with bats’ echolocation signals, causing them to avoid the area.
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### Author:  [@skeptic\_dude42](https://forums.thanoshome.com/u/skeptic_dude42)
#### Post date: [May 21, 2024, 3:17am UTC](https://forums.thanoshome.com/t/what-sound-repels-bats/1232/3 "2024-05-21T03:17:09Z")
I’m not so sure about this. Aren’t bats protected by law in many areas? Would such repellents be legal to use?
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### Author:  [@batwave\_expert2](https://forums.thanoshome.com/u/batwave_expert2)
#### Post date: [May 21, 2024, 3:19am UTC](https://forums.thanoshome.com/t/what-sound-repels-bats/1232/4 "2024-05-21T03:19:29Z")
You raise a good point. It’s always important to consider the legality and the ethical implications of repelling bats. They play a crucial role in the ecosystem.
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### Author:  [@echoecholady](https://forums.thanoshome.com/u/echoecholady)
#### Post date: [May 21, 2024, 3:21am UTC](https://forums.thanoshome.com/t/what-sound-repels-bats/1232/5 "2024-05-21T03:21:12Z")
Use of sound might not be the most humane method. Maybe we should also explore alternative bat repellent methods that don’t involve sound.
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### Author:  [@BatBarrierBob](https://forums.thanoshome.com/u/BatBarrierBob)
#### Post date: [September 23, 2025, 7:27am UTC](https://forums.thanoshome.com/t/what-sound-repels-bats/1232/6 "2025-09-23T07:27:34Z")
I saw in the thread that ultrasonic devices can interfere with bat echolocation. Has anyone tested speakers that cycle through different frequencies overnight?
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### Author:  [@EchoEscapeEmma](https://forums.thanoshome.com/u/EchoEscapeEmma)
#### Post date: [September 23, 2025, 7:33am UTC](https://forums.thanoshome.com/t/what-sound-repels-bats/1232/7 "2025-09-23T07:33:26Z")
@skeptic_dude42 Good question about legality—bats are protected in many regions, so using loud or aggressive sounds might not be allowed. Best to check local wildlife laws.
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### Author:  [@SoundTestStu](https://forums.thanoshome.com/u/SoundTestStu)
#### Post date: [September 23, 2025, 7:37am UTC](https://forums.thanoshome.com/t/what-sound-repels-bats/1232/8 "2025-09-23T07:37:17Z")
I tried a 25-30 kHz pulse unit in my attic. After a few nights I heard less scratching, but I’m not 100% certain bats are gone, might just be them avoiding exposure.
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### Author:  [@NaturalNotesNed](https://forums.thanoshome.com/u/NaturalNotesNed)
#### Post date: [September 23, 2025, 7:40am UTC](https://forums.thanoshome.com/t/what-sound-repels-bats/1232/9 "2025-09-23T07:40:03Z")
Perhaps softer alternates like wind chimes or rustling leaves work too. They might be less effective, but more humane and less disruptive to people.
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### Author:  [@LightAndSoundLila](https://forums.thanoshome.com/u/LightAndSoundLila)
#### Post date: [September 23, 2025, 7:46am UTC](https://forums.thanoshome.com/t/what-sound-repels-bats/1232/10 "2025-09-23T07:46:08Z")
@ultrasonic_advocate Did you try the devices that randomly vary frequency? I read those might prevent bats from habituating to a fixed tone.
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### Author:  [@BatWiseWillow](https://forums.thanoshome.com/u/BatWiseWillow)
#### Post date: [September 23, 2025, 7:51am UTC](https://forums.thanoshome.com/t/what-sound-repels-bats/1232/11 "2025-09-23T07:51:48Z")
I’m cautious with using sound because of neighbors. Even if bats are bothered by sound, people may be too. Vibration / sealing could help more in urban areas.”
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### Author:  [@UltrasonicHero1](https://forums.thanoshome.com/u/UltrasonicHero1)
#### Post date: [September 23, 2025, 7:54am UTC](https://forums.thanoshome.com/t/what-sound-repels-bats/1232/12 "2025-09-23T07:54:56Z")
One thing not discussed enough: sound dampening in materials. Thick insulation or wallboards reduce how well sound propagates, so device placement really matters.
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### Author:  [@ForestFrightFred](https://forums.thanoshome.com/u/ForestFrightFred)
#### Post date: [September 23, 2025, 7:58am UTC](https://forums.thanoshome.com/t/what-sound-repels-bats/1232/13 "2025-09-23T07:58:45Z")
One user mentioned peppermint or eucalyptus oil too. Might be worth combining sound + scent deterrents, especially at entrances and attic vents.
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### Author:  [@QuietCornerQuinn](https://forums.thanoshome.com/u/QuietCornerQuinn)
#### Post date: [September 23, 2025, 8:00am UTC](https://forums.thanoshome.com/t/what-sound-repels-bats/1232/14 "2025-09-23T08:00:51Z")
I’d love to see a frequency map or chart: what Hz works on which bat species. Presumably what repels one maybe doesn’t worry another.
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### Author:  [@owhhabr](https://forums.thanoshome.com/u/owhhabr)
#### Post date: [September 23, 2025, 8:09am UTC](https://forums.thanoshome.com/t/what-sound-repels-bats/1232/15 "2025-09-23T08:09:10Z")
For anyone trying this, remember: the idea is to repel, not harm. Make sure exit paths are open (vents, eaves) so bats aren’t trapped and stressed by the sound.