7. Use rewards
A puppy doesn’t understand why you would care whether he goes to the bathroom inside or outside. You have to give him a reason to care. The three main types of rewards are praise, treats, and play/freedom; use all three every time. Again, timing is everything. Start the praise and give the treat as your puppy is finishing his business. Then have your play session; this is the only time your puppy should run around loose in the house until he’s completely trained.