Im sorry but I have to disagree with you. I would never recomend a water spray. It causes fear and it is a punishment, no matter how you describe it. Why rule your dog through fear when there are other ways of altering behaviours. Its completely unnecessary. Particually if you then use spays for other things (such as plants, even air freshners or polish etc) as the noise can then scare your dog when it is infact doing nothing wrong. This could then lead to confussion and in some circumstances aggression. In my opinion it is not worth the risk.