The spray bottle worked good for us on our past dog Sam. Even tho she loved the water hose etc. after while all I needed to do was just show her the spray bottle!
My dog Buddy Boy never barked until we boarded him - and when he does bark he is way down to the end of the fence . He is very good natured and loves about everybody but feels the need to walk the fence and does not like it when strange people walk to close to the fence and if I yell NO BARK he turns around and gives me this dumb founed look