We obtained two adult 4 lb female Maltese's thinking because they are small and cute and adult there should be fewer problems. WRONG! After a few weeks in our home we were going crazy with the barking.....plus the younger one decided she was going to be the alpha and started nipping at people, mainly men. Our vet had a brochure for Bark Busters and that was the end of our problems. At the first session the barking was stopped in about 8 seconds! We were astounded and so pleased to find someone to teach us how to "think like a canine". I feel it actually saved one of our pets because had she kept biting, in our ignorance we probably would have put her down, and that would have been a shame. The other issues we are working on will be ongoing but we are so happy that Lisa and Nelson Neyers gave us the tools with which to make us happier along with our girls being happier too. I highly recommend Bark Busters, I feel we all benefit from well behaved canine companions.