A satirized version of Millan was portrayed in "Tsst", the May 3, 2006, episode of the Comedy Central animated series South Park. In the episode, Liane Cartman enlists Millan's help in applying his principles to her misbehaving son, Eric Cartman. The principles work and Eric temporarily becomes completely reformed. However, in the end when he refuses to go on an outing with his mother, she caves in to his demands in order to persuade him to go along with her, thus reverting his behavior to its original state. In 2010, when Millan was asked if he was offended at all by the episode, he stated that the creators of the show (Trey Parker and Matt Stone) contacted him to inform him of their intentions beforehand and that he found the episode fantastic. Millan reacted to the episode in a video posted on November 13, 2019 to his YouTube channel.
I know I keep mentioning this, but it is SO IMPORTANT for you to understand that in the dog potty training process, there are going to be accidents. What you do when your dog has an accident is very important. Yes I know that nobody likes cleaning up after the fact but if you react negatively your dog will start to associate your anger or frustration with him going to the bathroom and will be afraid to eliminate around you. I would say this is the biggest mistake people make while dog potty training.
Before enrolling with a particular club contact them and ask if you can go to watch a class without your dog. This will help you decide if this is the right environment for you and your dog. Some clubs have waiting lists and you will need to book ahead, some accept people on a roll on roll off basis. Prices will vary from a joining fee and then weekly payments to a one off fee for a certain length of training.