"It's horrible, loud and irritating," said Eddie Holder, 15, who sprinted from his apartment for school one morning covering one ear with his hand to block out the noise. The device was installed outside the building to drive away loiterers. "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."i so want a portable version of one of these. i swear to god, id carry it everywhere and never turn it off...
[edit:] ugh i take it back... evidently im one of the few adults that can hear the damn thing... i can see how it would drive people away, that sound would make me batshit in short order...