Can anyone help, I have a 17 week old working cocker spaniel puppy. He is a really good dog except for one thing. Peeing in the house. I have done everything I've read to do, ignoring accidents and giving him a treat every time he goes outside. I also take him out every 30 minutes and after food or when he wakes up but nothing is working, he pee's outside every time I take him but then still comes inside and goes again. He can do it and knows to scratch on the door to tell me he wants to go out and will do this sometimes, he has also gone several days without an accident but then goes back to peeing in the house again! It's driving me crazy! Has anyone got any suggestions as to what I could do?