I only clean soiled eggs with light sanding with sandpaper. Any egg that is grossly soiled, I wash well and use right away.
Wuth any cracked eggs I cook them right away and feed them to the girls as a treat.
Oh I never wash my eggs for the very reason that they have a natural antibacterial barrier on them when laid. If they are stuck with some ppop on them i might just use light sand paper to sand it off and I use that egg right away either for the household or hardboil and give to back to girls.