We were very shy, but Linda was very relaxed and encouraging. We noticed results right away! I was open mouthed shocked at the quick results. I am glad no treats are used. The "bahhh" is very effective. We were entranced. We did not really think it would work, but it did and we could do it! It is different and takes getting used to, but is wonderful. The system is great for the dog and for us. I have read many testimonials and never believed them...never saw proof, but Bark Busters is the real deal! I am still shocked at how well it works.