My ducks have recently started laying eggs and I am very impressed, my khaki has laid one everyday for the past month and my welsh harlequin has laid one everyday for about the past week. My girlfriend and I want to purchase a small incubator and try to hatch three or four. My question is, every morning I go out to collect the eggs they are covered in manure despite cleaning the coop daily and adding fresh woodchips. I read that the eggs can't have any manure on them in order for them to hatch, but I also read that it's bad to clean them or wipe them off with a paper towel, so what do I do? Any help would be greatly appreciated.