We saw noticeable improvements by the end of the first visit. After applying the method we saw more improvement after the first day. We were very pleased, but as with everything new and different, it takes some getting used to and breaking old habits. It was very interesting, informative and challenging! It is never enjoyable when one finds out they're the root cause. We would recommend Bark Busters without reservation but because of the commitment required it is not for everyone. Some would be better served with a stuffed toy.