The changes were immediate! Very simple and easy to understand. We will recommend Bark Busters because it works and is simple and easy. Most of all, our dog seems more content and we are more relaxed. Having just had a baby, we were desperate to stop some of the bad behaviors our dog displayed. We tried classes, books and everything anyone suggested. Nothing worked! We thought we would give Bark Busters a try and couldn't believe the difference! After our session, we had a well-behaved dog. Now we don't have to worry when the baby sleeps or when we have visitors. Thank you so much!