[shermheadryder]

> They don't wear shoes at home and public spaces don't have litters all over.

I might be missing something, but what does this have to do with COVID?

[mekster]

It means, whatever you have stepped on outside, you don't just spread it all over your house... Maybe you don't step on Covid infected materials but who knows? It's just another possible source.

[kwhitefoot]

Stepping in something isn't going to infect you.