I've seen it being demonstrated during a tech show on TV (not a commercial for it) but changing around all the colored rings and putting them on/off just seemed like a lot of work (and worrying about their feet being where my bottom goes :-) having to clean the seat all the time, etc.; not something I wanted to take on I didn't think.

What's the etiquette? We only have 1-1/2 baths and I can just picture the cat using it and me having to wait? I don't think so