It still smacks of urban legend to us, but some people swear that teenager-repelling sounds do exist--and work. So we wouldn't be surprised to see some desperate parents and shop owners rushing to order the "Mosquito," an ultrasonic youth deterrent from the United Kingdom, which Gizmodo says is being imported to North America. The device, distributed by a company with the irresistible name of Kids Be Gone, supposedly creates an adolescent-free zone with a range of 40 to 60 feet. We'll be right back (need to find a tape measure).