VERY INTERESTING & VERY ENJOYABLE. Our dog is 90% more 'gentlemanly' than before Bark Busters. This plan will yield a perfect dog if the effort is expended by the owners. Anyone of any age can do this. Within 48 hours, Tiger changes and it's because WE are now in control, not Tiger. Yipping in crate, crying in crate & moving the crate disappeared. Jumping is 99% gone. As usual, it's not the dogs, it's the owners. I fully expected to be trained to train my dog, and that's exactly what happened. Expectations fulfilled! CAN'T WAIT FOR THE NEXT VISIT!