I worked with a guy on n/shift on the trains who had the same problem when he was tryin to get day sleep with his neighbours' dogs. He spoke to them several times to no avail so he eventually recorded the dogs barking during a particularly bad day on cassette and before he came in to work he would turn his floor speakers 180 degrees right up against the dividing wall and crank it up and leave it playing on auto-reverse all night long I know that's not really a solution for you but I thought it would make you smile and get your creative juices flowing ;)