That's why I had to locked them up, everyone keeps going in and adding eggs. I would try and go in and pull the eggs laid for that day, but apparently I have missed some because my husband cracked open a CCL egg this morning and it was a developing embryo. So I went out and locked up the broody coop, food and water went in and there is open space for them to poop.
A lot of people will take a Sharpie and mark the 'no collect' broody eggs to make them easier to identify...