Good advice already given. I would add this. When you cannot keep an eye on the dog the dogs gets put into a kennel crate. When the dog first comes back out of the crate he goes outside and doesnt come back in untill he relieves himself ( you must stay out there with him and make sure he goes). As soon as he does you say good dog and then he comes right back in. I have had several older dogs that started out in the kennel for a few years and then are moved into the house at a later time and have never had an issure. Off course my dogs dont hardly relieve themselves in the kennel because they are regalarly let out into the airing area to go at a regular schedule. Hope this helps