[mustluvdogs66]

I had a treat baggie for the first few months, but I realized that he'd focus too much on the food to go pee. Since then I've switched the reward to "going back inside." He's a hairless dog so he really doesn't like the outdoors, and he knows as soon as he goes potty he gets to run back inside. So he goes out, uses the bathroom corner, and then runs back to the porch. Sometimes I don't let him in for an extra few minutes though, because often he has a secret "second poop" or something of the like and he goes back to do it.

I understand your logic, But… If you’re giving a treat inside, he thinks he’s getting rewarded for coming inside. If you reward your dog, it has to be within 1-2 seconds of the action you want rewarded.