With Kota, when he was a pup, he came mostly housetrained but if I was in another room, he'd walk away into the room where the door is. If I didn't call to him, he'd pee in that room. So if he walked away, I'd call to him, he'd look at me and we'd go out. He was about 5 months old. Tasha, she was mostly housetrained but she seemed easier, I knew more. She would kind of stop what she was doing. Whether chewing a toy, or playing, she would stop and I'd ask her, "do you need to go out"? She would look at me and out we'd go. I took her out A LOT! he he... but it seemed to do the trick. If I couldn't watch her, in her crate she'd go. Even if we were watching TV, I'd keep her in front of me where I could half watch her. Once movement stopped (movement being playing, chewing, etc) I'd ask that question.