I have the same problem.
Just so you don't think I am abusing my chickens, we have built the chickens a Palace. 3 chickens, 2 guineas, and they have a 5x4x10 coop, and free range during the day. These are all rescue chickens, too. I love them all, even the one with the big callous on her breast.
They won't lay in their nice boxes. I've accepted this
.
They poop heavily all over their eggs, and still sit on them.
This kicks in my OCD, especially when I need to clean the coop.
One chicken is laying thin shelled eggs. That's another issue, for another thread. I've given her all kinds of calcium supplements.
When I am continuous about feeding her the oyster shells and spinach, her eggs toughen up. But, so do the others.
So, I live with the thin shell syndrome.
All the chickens lay together.
When the brooder gets off the eggs, she cracks my other chicken's egg. Which, in turn, gets on the eggs I am trying to hatch.
So, In an Eggshell, here's my problem
Now, I have poop and broken egg on my eggs.
Should I wash them?
HELP!