My pup Riley is potty trained all the way. He doesn't usually let me know that he's got to go outside to pee and poop because I take him out at certain times throughout the day and he does his business then. I'm over at my old roommate's place with Riley and he's got to go outside because he's sitting at the door looking at me. I keep saying "Do you have to go outside? Tell me! What do you have to do?" And he twists his head and is like WTH? Lol, he gave a little bark so I took him out. I had my last dog Marshall trained to give me a bark before he needed to go outside. I think this is going to work pretty well!