I have 2 small dogs, both Cairn Terriers. We got them when they were 10 weeks old. My husband and I thought we could handle it and quickly found out we were wrong. Our dogs ruled our household and we had no control! For those of you who have never owned a terrier, that is short for terrorist and thats what we had, 2 male terrorists. We both got to the point of wanting to send the dogs away to a boarding program or give them away until someone recommended Marvin. We've been with him for a few months now and our babies are totally different dogs now. We have control of our house and it's because of Marvin. If you listen to him and follow his program, you will get results! I'm not attempting to put down other programs as I've had other dogs and I've been to the chain programs of Petco and Petsmart and "graduated" from them with dogs past but never in my life have I had dogs as trained as the ones I have now. We still have a long way to go but I highly recommend Marvin and encourage others to try his program and trust him as we have because you will not regret it!