I have 24 cornish X chicks that are almost a week old. Initially I was feeding them with the food & water on ground level, they'd eat themselves stupid, fall asleep in the food dish. Two days ago while cleaning out their brooder (they are in a plastic kiddie pool) I noticed that nearly all of them were filthy dirty on their stomachs & chests, caked with food. I soaked them all in warm water and washed off everything that was stuck on. I've since put the feeders up on a box, so they can't lay in it as easily. A few of them are getting the dirty bellies again... is this normal??? Should I continue to wash them? I'm worried that they will rot or something if the food stays on there, caked up.