How to freak out your dogs

This site should come with a warning: "May cause any canines in the room to panic and hide in the bedroom, and subsequently attempt to trip their owners by trying to wrap around their legs in terror."

You are the typical teenager

You can hear the frequency of the mosquito teen repellent - but probably not for much longer! The highest pitched ultrasonic mosquito ringtone that I can hear is 17.7kHz

Find out which ultrasonic ringtones you can hear!

Ha! As an old fart of 31, that makes me fairly cheerful. (There's a noticeable difference, though, between this and the next-lowest tone -- I can definitely hear the higher one, and it's very annoying and slightly painful, but I can hear the next one down a lot better.)

How to freak out your dogs

This site should come with a warning: "May cause any canines in the room to panic and hide in the bedroom, and subsequently attempt to trip their owners by trying to wrap around their legs in terror."

You are the typical teenager

You can hear the frequency of the mosquito teen repellent - but probably not for much longer! The highest pitched ultrasonic mosquito ringtone that I can hear is 17.7kHz

Find out which ultrasonic ringtones you can hear!

Ha! As an old fart of 31, that makes me fairly cheerful. (There's a noticeable difference, though, between this and the next-lowest tone -- I can definitely hear the higher one, and it's very annoying and slightly painful, but I can hear the next one down a lot better.)