Mosquito by mailbox (building) loud beep

[postbode]

The sound is mostly only audible for children, youngsters and people with ears that are
still good.


The sound causes pain in the ears, headache, and ringing in the ears.
If you have any complaints consult your GP and make mention of it on
social media!

Working Mosquito: 17KHz-20KHz 90dB (against loitering)
Working Cat Deterrent/Animal Chaser: 16KHz-23KHz 130dB (against people and pets?)

See also: http://www.dailymail.co.uk/news/article ... sance.html" onclick="window.open(this.href);return false;

who has problems about the Mosquito?

[crazyshrew]

Not experienced the mosquito, but the noise those cat deterrents make cuts right through me. Wouldn't call it painful but 10/10 for discomfort, feels like something is slicing my head in half.

[postbode]

That's correctly what you feel!

http://www.icben.org/2014/papers/Team4/ ... Ueda_1.pdf" onclick="window.open(this.href);return false;

For the degree of the sound source awareness, 43% of the subjects answered that
they “know (the device).” However, when asked about the kind of sound, many of
them mistook it for a “mosquito sound.” In addition, some responded that “my head
may split” and “I will never come here again because of the pain in the ear.”

[crazyshrew]

would it be a reasonable reason to avoid delivering to some addresses?

[postbode]

Loud beep, not to loud?