One co-worker says he writes the date on his eggs with a sharpie. I was wondering if any one used other ideas on how to know how old your eggs are. We currently have seven hens, six are laying and we almost always get six eggs a day, sometimes only five, but mostly six. It is just the wife and I and there is no way we can use all those eggs. We live in farm country and people with chickens are not in a shortage. Most of my co-workers have at least a few hens for eggs. I tried giving eggs to the one co-worker that does not have chickens and he declined. That may explain why he only keeps chicken in the summer and then gives them away in the fall. I really have no interest in trying to sell our excess eggs, I give them away when I can, but want to make sure the eggs are fresh. Related question, how long do eggs stay good? I know eggs in the grocery store have an expiration date on them, but don;t know how long those eggs are in the packaging process.