This is a tough one for me, to be honest. I actually go in and out a lot because we have a nice yard (aka garden). So I need dedicated pairs for in and out that are quick to swap. I've been wearing a pair of felt Birkenstock clogs for indoors, and a suede sandal pair for outdoors. I would love to wear my sneaks but they don't swap quickly and I feel downright ODD wearing outdoor shoes around the house, even if they've never been worn outside. My brain just feels always like I'm doing something wrong. I've tried cleaning the soles of one pair of sandal style Birks but that didn't last long because I wanted to wear them out of the house to an appointment. And I'd rather not constantly be cleaning the soles of my shoes! So, I suppose, I should get a dedicated pair of inside Birks that are sandals. I already have SO many pair, though...