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High-pitched device drives away loitering teens

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By The Associated Press | Wednesday, April 23, 2008 |

NEW YORK— As 15-year-old Eddie Holder sprinted from his apartment for school one recent morning, he held his hand to one ear to block out a shrill, piercing noise.

The sound was coming from a wall-mounted box, but not everyone can hear it. The device, called the Mosquito, is audible only to teens and young adults and was installed outside the building to drive away loiterers.

The gadget made its debut in the United States last year after infuriating civil liberties groups when it was first sold overseas. Already, almost 1,000 units have been sold in the U.S. and Canada, according to Daniel Santell, the North America importer of the device under the company name Kids Be Gone.

To Eddie, it’s tormenting.

“It’s horrible, loud and irritating,” he said. “I have to hurry out of the building because it’s so annoying. It’s this screeching sound that you have to get away from, or it will drive you crazy.”

The high-frequency sound has been likened to fingernails dragged across a chalkboard or a pesky mosquito buzzing in your ear. It can be heard by most people in their teens and early 20s who still have sensitive hair cells in their inner ears. Whether you can hear the noise depends on how much your hearing has deteriorated — how loud you blast your iPod, for example, could potentially affect your ability to detect it.