We started sit means sit about 2.5 months ago. We rescued a pitty mix with a large personality. We wanted to have more control over him. We are happy to say that the change we have seen in Duncan is unbelievable. We now can take him more places, have people over, and go on walks without being drug down the street. It has been such an amazing experience and he is just getting better and better as time goes on. We are so thankful for the trainers at sit means sit and look forward to continuing our group classes to make him the best he can be! Sit Means Sit is highly recommended!