Millan's first job in the United States was at a dog grooming store. He later created the Pacific Point Canine Academy. Jada Pinkett Smith became one of Millan's first clients and supporters when he was working as a limousine driver, providing him with an English tutor for a year. Subsequently, Millan created the Dog Psychology Center, a two-acre (0.81 ha) facility in South Los Angeles, specializing in working with large breed dogs.
In the 1950s Blanche Saunders was a staunch advocate of pet-dog training, travelling throughout the U.S. to promote obedience classes. In The Complete Book of Dog Obedience, she said, "Dogs learn by associating their act with a pleasing or displeasing result. They must be disciplined when they do wrong, but they must also be rewarded when they do right." Negative reinforcement procedures played a key part in Saunders' method, primarily the jerking of the choke chain. The mantra taught to students was "Command! Jerk! Praise!" She felt that food should not be an ongoing reward, but that it was acceptable to use "a tidbit now and then to overcome a problem." Saunders perhaps began the shift away from military and police training methods, stressing repeatedly the importance of reinforcement for good behaviour in training—a move toward the positive training methods used today.
When you're potty training a puppy, give the dog ample opportunities to relieve themselves outside and no opportunities to do so indoors. To do this, set a strict schedule of taking them out frequently. You'll also need to be aware of the most common times your puppy might have an accident, like when it's waking from a nap, a short time after it eats or drinks, or if it hasn't gone out for a couple of hours.
If your dog isn’t giving you an obvious signal that they need to go out (like whining at the door) I suggest teaching them to ring a bell when they need to go outside. Some of the other signs dogs give that they need to go out such as pacing around or circling can be easy to miss if they’re in another room, which is why a noise based signal such as ringing a bell can make things easier.