My 4 year old cocker has started pottying in my unfinished laundry room. We used to go outside often when I smoked and he had a dog door to go out. I don't go out as often as I used to (I quit smoking) but he still has a door to use. He won't use it now, he did before. He is extremely shy, afraid, and stays close by me. How can I get him to use his door to go out without me and quit going in my house?

