Some people might not like what I'll suggest but a dogtra 1900s turned up to 60(goes to 127) stopped a female gsd i have from eating rocks. And this dog is widevopen and constantly worked so boredom wasn't a factor. She's always chewing on a kong or ball but I couldn't take a chance on her ingesting rocks or breaking teeth or worse. Just that quick and no more rock eating. Long line or prong or redirection ever stopped it. The dogtra shut that mess down asap


“Discipline is the refining fire by which talent becomes ability “—RLS