Well I have received eggs in just about every method (bubble raped and loose in shoe box, cartons ect.) with that in mind I will line a carton with paper towel and place the eggs in it ( the paper towels are to keep the egg snug in the carton), I will wrap the carton in bubble wrap and put in the center of a box filled with packing peanuts. The bubble wrap and packing peanuts are an expense but well worth it if they help the hatch go well. I know other have not had such good luck with using the cartons? Out of my personal experience this has given very low % of damaged eggs and very high % hatch rates? But I did click on this thread to see, there is always something to learn.