Wow, Giselle makes alot of sense. I know that's the way to do it, I've seen and heard about it. I never did because I never had a problem like that with my dogs, thankfully. But she is right, they have to earn things. And believe it or not, it's not mean, they like and need discipline. They like earning things, they like having a job to do. Makes them feel useful and we all know that dogs love to please their masters.