Never let the puppy see you clean up its mess, and this means never. If the puppy marks the inside of the house with accidents that are not cleaned up thoroughly, it will use the pheromone in these accident areas as the indicator of where it should go again. The best rule is to avoid the accident in the first place by containing and watching your puppy like a hawk when it is not contained until you think they’re reliable going outside.
Do not scold the puppy for having an accident. Do not use a newspaper to swat them, rub their nose in it, or any of these old school potty training punishments. Make sure everyone in the household and any friends or guests understand not to punish the puppy for an accident. If the accident was inside the crate, then place the puppy in a bathroom or other safe confining area in the house while you clean up the mess inside the crate. This process should take place like clockwork for the first week after bringing home a new puppy. At night, right before going to bed, you take the puppy out for the last time (follow the script) then place them in their crate for bedtime.
Do not give your puppy food or water at least two hours before bedtime; we prefer three hours.
Do not let the puppy train YOU with moans and whimpering at night. Leave the puppy to adjust to its new environment. In the morning, go to the puppy and put the leash on their collar, pick them up and carry them to the door quickly and begin the housebreaking process again, following all the before mentioned steps.
If the puppy soiled its crate, clean up the mess without bringing attention to the puppy that it had an accident. After a month or more when the puppy always goes to the door to go outside, begin to wean the puppy off treats. Start skipping treats every once in a while. Once the puppy is completely housebroken, they can be weaned off the treats completely. Just remember to not give up on training the new puppy.
Do not use doggy doors until the puppy knows its proper spot to go potty and not to go inside. Be diligent, have patience and consistency in your training and your new puppy will be housebroken in a short period.