We are adding a garage and fenced yard. I was planning to put a dog door from the yard to the garage so that when we are gone, the dog can be where he wants to be. Then I realized that I could put a dog door from the yard to the house and he could be where he wants to be any time. I'm not sure how wise this is because he could bring yucky things into the house or get muddy and come in. On the other hand, he could go in and out as he wants and that would be less worry for me. Any advice? Oh, and I would probably get him the kind that comes with a colar that opens it and he is a tiny dog so I'm not worried about it being access to theives to get into the house.