My first egg carton hatch is complete. I have to say, by the beginning of day 22 I wasn't convinced, but now I am. It took 23 days and 5 hours, but... Out of 35 eggs, I had 34 hatches, and only 1 death. I had to assist with a couple, but so far they're doing well. I reckon I've been convinced. I'm especially pleased with the eggs from my chickens --- I put 11 in, all 11 were fertile, and all 11 hatched. It's hard to ask for more.