Like... after a shower, we dry our face first and our butt last. And then we use the same towel tomorrow.
Think about our phones. We handle them all day, everything we do cooking, shaking hands, hugging kids, the bathroom, then put it up to our faces. How often do you clean your phone?
Never even thought about that
I still can't convince my 6-year-old to wash or dry his face first... lol. So then I have to decide if I'd rather him be independent or I'd rather him be clean.