I really don't know anyone who doesn't wear their shoes at home so it just wouldn't occur to me to take them off. I probably wouldn't even click if they weren't wearing theirs either. So I guess they'd have to mention it. Relatively happy to take mine off if asked but I'd probably get a bit nervous in the house then and worry that my mere presence was going to dirty their home and I'd be conscious of my tea leaving a ring on their coffee table and all those other little things.