SMS is a franchise - people buy into it, and are under quota to make a certain amount per month. And as Volcano mentioned, you have to use the SMS method, which is strictly e-collar training.
You don't have to have credentials to be a dog trainer, just need the money to buy into the franchise, and off you go!
BH, OB1, TR1, AD
Rottweiler/Hairy Dog mix?? Shelter rescue
Gryffon Vom Wildhaus