TDTC is a great organization that relies on volunteer trainers to teach various classes. They offer a great deal of knowledge to their students. The only thing that me and my pooch didn't like was that they insist on the use of prong and choke collars. Our trainer even told us to place a pin brush under our dog to get him to stop sitting down! Ouch! However, not all trainers are like this. If you decide to train your dog here, request a trainer that only uses positive training methods.