washing chickens for show-Brooklyn Fair

[perfectly_polish]

I am bringing 11 birds to the brooklyn fair in CT and it starts this Thursday. I am bringing 4 silver laced polish 3 buff polish 1 buff orpington 1 dominque 1 partridge silkie rooster and 1 partridge silkie pullet. This is their first show and mine too. What can I wash them with to make them clean? Is anyone else going to the brooklyn fair, maybe I'll see you there!

-Sophia