Noise device tackles youth yobs

The "mosquito" unit has been installed at the Selston Health Centre near Kirkby in Ashfield, Notts, to combat vandalism and cases of attempted arson.

The noise the unit produces can only be picked up in the hearing range of young people, typically aged under 20.

Add this to my Christmas list stat. I bet this thing will clear the teenage loiterers out of Barnes & Noble in a hurry.

(I'm assuming "yob" is a contraction of "youth" and "mob." If so, isn't the term "youth yobs" redundant?)