Hard as it may be I think the best thing to do is move. If you complain to the council you will then have to admit this if or when you do sell and it may put future buyers off. If you complain and end up having an argument with the neighbours ,same situation arrises.You have to own up to this when selling,so sell now and check your next property for dogs. I have similar problems. No barking but lots of poop.I wont complain as I have made up my mind to move and if they get neighbours with animals that poop every where they will know what I have been going through