Washing eggs doesn't make much sense to me. The outside of the shell gets cleaner and looks nice, but then the bloom is gone so it's open to infection, and in the washing process soap, microbes and other foreign matter can get into the egg through the shell, which obviously is porous. So an egg that's dirty on the outside because it wasn't washed is perhaps cleaner on the INSIDE than one that was washed... How counterproductive is that! If you absolutely must have pristine-looking eggs, a quick and gentle wipe with a clean, moist cloth or paper towel, like ibeier does, will take care of all but the crustiest, nastiest rejects while preserving the shell's integrity. And remind or educate people every chance you get about the value of un-washed eggs (more pristine, don't need refridgeration, less wasteful of resources). Also, keeping your coop clean and dry and keeping plenty of clean bedding in the nest boxes, as well as collecting eggs at LEAST once a day (if not more, like ibeier), goes a long way toward cleaner eggshells...