Teen Repellent

In the UK some stores are using a high frequency sound that only teens can hear to keep them out of their retail stores. Apparently it is really annoying. I can't hear the sound. Can you? It's not the background sound it's the high pitched sound over the background noise.

Please listen to the sound here and comment on the following...

My age is ____
I can hear the sound ___yes ___no

tags: Mosquito Sound teens