So, during the summer, I usually run about 4k a day... And every time I ran by this house which is about two down from me, I'd hear this HORRIBLE buzzing noise, very high pitched, to the point that I would actually have to put my hands over my ears and run faster. Sometimes I'd even hear it (briefly) when I drove by. I began looking at their house to try to figure it out, and I saw this black device in their garden which a red button would light up whenever I would pass by. I just read this article : http://www.therawfeed.com/2008/02/high-pitched-anti-teen-gadget-under.html Turns out it's a device that spouts out a weird frequency that only people under 20 can hear. WHAT A BUNCH OF BASTARDS. (my neighbours) For putting it up. It's a middle class suburbia and Now i am probably going to egg their house this summer if It's up again, regardless of whether I can hear it still or not.