Fwiffo: Kipling's right, you could possibly put in a "nuisance barking" complaint - there are laws governing how much noise, how loud, and for how long you have to deal with it - you should call either the police or an animal agency (SPCA or ?) - HOURS of anything is TOO long...especially at 7am...If you go the stereo route, go ALL out, place the speaker-front on the floor, make sure it's over their bedroom, and play some Korn, Slipknot or Ozzie (I have teenagers) - maybe they'll take the hint :)