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Ugh, this reminds me of a neighbor of a family member. They have a backyard, and sometimes, it is pleasurable to sit, grill, bbq, etc. in a backyard, particularly in the summer months. You know, normal suburban stuff.

The neighbor has some sort of device that emits extremely loud, extremely high-pitched (but not ultrasonic; or at least, not exclusively ultrasonic) noise. The family member thinks its some sort of anti-rodent thing. Whatever that means in suburbia, as there are, of course, nigh-endless squirrels, rabbits, birds, etc. all over the place. The yards are all fenced, so probably no deer at least in the back yards.

But it is absolutely annoying to just get what amounts to a DoS attack on your ears when you're trying to have a pleasant conversation with someone in the sun.

Of course, the elders in the family hear nothing, and the pitch is truly that high, that yeah, older people might not still have hearing in that range. "Unfortunately" for me, I still have ears.





Those devices are specifically designed to ward off young people. It's not an anti-rodent thing, it's a "get off my lawn" thing.

If you were to disable the speaker, they would probably never notice...

my mother's neighbor had in garden this anti-mole device, quite annoying to hear this frequent high pitched sound in regular intervals, maybe talk with neighbor about other ways how to get rid off moles

My neighbors -- 50somethings -- had one. Drove me absolutely insane, as the noise emitted was so loud it hurt my hears. I talked to them, explaining the issue. They turned it off.

YMMV...


These are commercially produced as teenager deterrents to "prevent loitering" (whatever that means).



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