Get Rid of Pesky Teens!
An inspired Brit, Howard Stapleton, has created a device that will repel teens. His device, called a "Mosquito", emits a high frequency sound that most people over the age of 30 cannot hear. Teens, on the other hand, hear the ingratiatingly annoying sound quite clearly, and are quick to clear out of the area projecting the sound. A few shopkeepers have installed Mosquitoes to prevent teens from loitering outside their stores. If you want to make sure that your little nieces and nephews stay away, read more about it here