This is the first dog training philosophy that has made sense to me. David Wiley is fantastic, with a great, accessible communication style that helps you work with your dog to achieve optimal behavior results. He taught us things I'd never thought of, like how a dog establishes dominance and how I can become the leader of my pack. I had no idea my dog was actually dominating me! Best of all, the training is done in your own home, which makes sense since that's where your dog makes most of his ""mistakes."" Training is also completely personalized to address the issues that bother you most. David gave us homework to practice that really helped improve our relationship with both our dogs. We purchased the lifetime guarantee, and feel secure knowing that for the life of our dog, if a behavior issue comes up (new dog, new baby, reverting to old habits), we can call David and he'll help us nip it in the bud. This is one of the best investments we've ever made in our family, canine and human. I've recommended BarkBusters to all my dog-loving friends, and recommend it heartily to all CitySearchers as well!