Stores use sonic devices to chase kids

England's commissioner for children and a civil liberties group joined in on a campaign Tuesday to ban high-frequency devices intended to drive misbehaving children away from shops and other areas.

The so-called "Mosquito" device emits high-frequency noise which is audible - and annoying - to young ears, but generally not heard by people over 20.

"This device is a quick fix that does not tackle the root cause of the problem and it is indiscriminate," English Children's Commissioner Al Aynsley-Green said.

The campaigners claim that about 3,500 of the devices, made by a Welsh company, are in use.

Aynsley-Green said in an interview with British Broadcasting Corp. radio that the devices do not tackle the real problem, which is that children have no place to gather other than on the streets.