We have a 12 week old standard poodle that we brought home at 8 weeks. He sleeps through the night and can hold his pee in the crate without trouble. However, once he is up and playing it seems like he constantly has to go. We have to take him outside every 15 min when out of the crate or else he seems to forget and go in the house. We take him out on leash, say go pee and reward outside. If he goes pee inside, I say outside firmly and bring him out to finish. We clean floor with nature's miracle. He doesn't seem to get the idea of bells nor does he go to the door to go out to pee. Any suggestions?