It was suggested to me eons ago.. We've done mild beginning steps and I've always stopped there. The cocker kids are easy at home. Can be pills if someone's at the door.. but day in day out easy going. Arson is well not..... He's super needy and a shadow and that is fine. He could use impulse control as he is driving me batty. So have you done it till your dog knows the game to a tee? How was your dog before and then now? When agility competitors suggested it, I was slightly turned off they made it sound like robot behaviour kind of.. Never picking up the dropped food on the floor unless okayed to do so. Arson needs help though. He's not so easy going.. I like him, but he's driving me mildly nuts... But all my google fu.. I see wonderful squee effects enough, lots of how to vids. Still can't quite wrap my head around the levels of leaving treats alone = better life choices and less spastic pup..