Ralphie barks at passersby and traffic, especially delivery trucks. He can get very fixated and does not stop for quite a long period of time. Today we taught him the 3-Bark Rule, which
teaches the dog that it's okay to bark to let us know something is there, but when we ask for
quiet the dog stops barking. It is very effective.
Jeff Dentler, CPDT-KA, IAABC-ADT, FFCP, CTDI