As your puppy becomes more reliable about using his toilet area and his bowel and bladder control develops, he can begin to spend more time outside his room or pen with you in the rest of your home. Begin by giving him access to one room at a time. Let him eat, sleep and play in this room but only when he can be supervised. When you cannot supervise him, put him back in his room or pen.
The principle behind using a crate for housetraining is that dogs are very clean creatures and don’t like a urine-soaked rug in their living spaces any more than you do. It’s important that the crate is the right size—just large enough for the dog to lie down, stand up, and turn around. If it is too large, the dog will feel that it’s OK to use one corner for elimination and then happily settle down away from the mess. Many crates come with partitions so you can adjust the size as your puppy grows.
With Ilusión Millan, his former wife, he founded the Millan Foundation – later renamed the Cesar Millan Foundation and currently called the Cesar Millan PACK Project. The foundation was established to provide financial support to animal shelters and organizations engaged in the rescuing, rehabilitating, and re-homing of abused and abandoned animals, and to fund spay/neuter programs to help reduce dog overpopulation. It aims to "improve the health, happiness, and harmony of dogs and people – while helping both species learn from and support each other." Among other projects, the Foundation worked with Yale University to create a children's curriculum based on his work.
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.
The next step is to teach your dog to ring the bell for a treat. Your dog has to be motivated to ring the bell, and in the beginning going outside isn’t enough to motivate him. But, if you teach him to ring the bell for a treat, he will quickly learn to ring the bell. You’ll want your dog to ring the bell with his nose, so make sure you hang the bell so it is nose level.
Let your new dog gradually earn freedom throughout your home. A common error that many pet parents make is giving their new dog too much freedom too soon. This can easily lead to accidents relating to housetraining and destructive chewing. So, close off doors to unoccupied rooms and use baby gates to section off parts of the house, if necessary. One of the best ways to minimize incidents is to keep your dog tethered to you in the house and by using a crate or doggie safe area when you can’t actively supervise him.