Why summer as well as winter is the season for shoes-off

The car park at my workplace is not paved; its just bare rock and earth. In winter it gets really muddy. Most people would acknowledge that you should take off muddy shoes.

Guess what, in summer it is still just as dirty in that car park. The bare earth dries up and turns into dust. Looking out of the office window now, I can see huge clouds of dust. This stuff gets picked up on shoes as easily as mud.