If I am in the garden or bathroom I can hear a really high pitched sound, but older people can't hear it, and recently my dog is always whimpering and depressed and trys not to go into the garden, where do I stand on asking the neighbour to take it down? Do I ask them directly? Do I call anyone else? Luckily my room is at the front of the house and can't hear it in there, so me and the dog have been camping out in my room recently! Are they allowed to have one of these in their back garden? The houses aren't private, they're housing association.