Do you mark you eggs? And if so...with what? I am trying to get some silkie chicks and I let my hen sit on 12 eggs she laid, except I candled them and all of them are showing infertile. I am assuming it is safe to eat these eggs...only been 10 days (2nd hen started laying after) So at what day can you candle and say...yep infertile...day 10? and then eat them?