Absolutely fantastic. Without a doubt - makes so much sense and easy to understand why Bark Busters methods work, My dog Archie responded not only to Karen but to me as well. Karen's approach was in keeping with my dog training philosophy, Gentle, non-threatening and positive - without the treats. I learned more from Karen in 3 hours than I had with classes that I had taken and another trainer. The approach is so gentle yet so effective. My dog was a biter when people entered our home, now he just waits and decides if he just wants to go into another room and watch TV. Our whole family has loved working with Karen, she was professional and yet friendly , we all feel so comfortable with her.