Our puppy is 9 weeks old and he is doing very well at going out to go potty. I am wondering about training him to go both out and inside on a potty pad. I know he is probably too young to introduce going on a potty pad yet, but I am wondering when I should, and if I should. Have any of you done both, and was it successful? I would like the convenience, but not at the cost of him thinking he can just pee and poop all over my house.