I am new to incubating duck eggs, and received a dozen last week from a breeder. I knew that waterfowl eggs were typically dirtier than chicken eggs and that chicken eggs should not be washed before putting them in the incubator. So I assumed it was acceptable to put unwashed dirty duck eggs in the incubator also (a couple eggs looked extremely muddy). But now I am reading more about duck eggs and have seen that some people recommend washing them before placing them in the incubator if needed. So washing them now would obviously be a bad idea because of the temperature change (they are on day 4 of incubation). Do you think they will be OK to leave them in the incubator dirty? The last think I want is exploding rotten eggs. I will candle them in a few more days and see which are developing. When do you remove duck eggs from the incubator if they do not develop? I usually get rid of the chicken eggs that aren't developing by day 14. Hoping I didn't mess this one up already!