I was out walking Doris and a lady approached me with her dog. Doris was being very vocal and the dog trainer told us to completely ignore the barking so I was doing. The lady then shocked me when she said, “If you fill a plastic water bottle up with stones/gravel then shake it when Doris barks she will stop, and when she does stop reward her with a treat.” This actually shocked me because this could scare Doris and make her worse. Doris does seem to be getting better with us ignoring the growling and barking and then rewarding her when she is quiet. What are your thoughts on bottles filled with gravel? Is this good or bad?