I have the same problem with Leo. We just started letting him go out to go potty, but still have a potty pad inside. I have a bell on the door for him to ring. I swear he rings it all day long!! He loves to go out roam around for a few minutes and then the wants right back in. He is driving us crazy.
I told my husband that Leo needs a doggy door...so he can go in and out all day.LOL