I've been keeping them in the same room as me so that I can keep an eye on them. I have restricted their free space, but not to the point of a crate or expen. I keep their pads in the same familiar spots. They typically just go potty on their pad when they want to. But the past few days, I've been taking them to a pad around the same times that I know they potty & giving them treats when they go. I'm thinking that maybe I just took the potty training thing for granted & maybe I should try to "reinforce" the idea of "you potty on this pad only" every few weeks, or once a month for a few days. I haven't caught either one of them in the act since yesterday afternoon. So we'll see how it goes