What I found works best is a sonic deterrent. It looks like a bird house when it detects barking it emits an unpleasant sound that only dogs can hear. It has worked miracles! I've not had any other complaints since. When we go to visit my parents (where tehy don't have a barking deterrent) my dogs almost never bark and their dog barks his head off. I can't say enough good things about it.
Where did you get this? Like a Petco store? I want to try one!!
The spray was a fine mist (you could see it and faintly smell it so you know it is working). The dog looked at them like they wer idiots for getting themselvse spraye
Anyway, one thing this lady liked about it is the spray is safe for the dog and for the young kids she has to be around.
This is with my windows shut (and I have dual pane windows, so that is not the issue). The neighbor between us has already talked to them and got nowhere so she is getting the HOA involved. I plan to complain as well.