Recently, I adopt a corgi about 4 months old. He eats much food so he has so much poo and pee, but I have to leave for work. I have walked him in the morning, but every night I go went back home and open the doors, the odour floods into my nose and let me lose the confidence to turn on the light. I have another dog (I adopted him when he was 2 years old), he can go to the bathroom and pee/poo on the puppy pad. How to train my puppy to form a good habit? Should I buy some dog diapers?