Earlier quoted context omitted.
So do you levitate from the place you remove your shoes?
No, you actually step out of your shoes an up to a wooden platform which shoes never trod. And yes, the top and even many middle level dining establishments in Japan actually do require guests to leave their street shoes in an entry way, called a Genkan. Nobody steps with their socks onto shoe trodden surface. It's not a complicated but of geometry, you loosen your foot in the shoes to make them ready for stepping ou…
I mean, dirt moves on its own. Bacteria moves, and dirt comes with them.
After all, how do you even know your soap is clean?
https://www.today.com/health/recall/hand-soap-recall-2025-rc...
And the recall was for deadly bacteria. Probably a growth medium too. Modern soap has lots of ingredients, each could be dirty at source.
So if your soap is dirty, how can your feet be clean?
I'm still not convinced.