My dog bogey continuously barked at the tv ALL the time and I couldn't watch anything. I finally looked into a trainer and Derek was amazing. I did overnight training and was completely comfortable leaving my puppy wth Derek! When bogey was returned I was amazed! I had tried reading things on online to learn to correct his problem but Derek was way more beneficial and very reasonably priced. He helped me understand the problem and taught me how to correct it! I can watch my shows again !!