I started out with 24 eggs. Here is the break down. 13 of mine went in-only 4 remain I accidently broke 2 early on-had to clean the whole bator! The rest started but died along the way. They have porus shells-could that be part of it? 11 of my SIL's went in-7 remain 1 infertile 3 started but died along the way. I cracked open a few and some that I thought were lost and had bloodrings still had veins! Some were obviously gone but not the last two. Now I'm second guessing myself and put the rest back in the bator. I guess as long as they don't smell I will keep them in there!