well, I always took my pups outside every 15-20 minutes, played with them, when they wee'd or poo'd I would praise them so much ....then bring them back inside. Every time they were fed, I did it and every time they woke up, day or night. It doesn't take long for them to know, and go to the door.....you let them out, and still praise them. It has always worked, and I have had a lot of dogs to train. I still did it at work with the ones that came with me.........

Someone told me to use paper once, and that dog was never trusted, as it would go away into another room to do it's little business, and I would not know until later. . . . but she was the cutest little dog, poor baby.