The best way to house train a dog is to be consistent and patient. Start by establishing a routine that includes regular potty breaks, feeding times, and play/exercise times. Reward your dog with treats and praise when they successfully use the bathroom outside. If you catch your dog in the act of having an accident inside, calmly move them outside and reward them for finishing the job in the correct spot. Clean up any messes with an enzymatic cleaner to remove the smell and discourage your dog from returning to the same spot. Be sure to reward your pup for doing the right thing and be consistent with your expectations.