I'm on my 3rd hatch for this year. The last 2 were not great,but I had shipped eggs. I am trying the egg carton method this time(again with shipped eggs),so we'll see if it helps. My reason for doing it is because I had several eggs pip correctly,then get rolled over by hatched chicks.If I open the bater to turn the egg,I jeopardize the hatch, if I don't,most likely they get stuck to the wire and can't get out. I also used the shelf liner with the other two,and will not do that again. In my experience,and please note,only mine, the eggs and chicks stuck to it more. I had to peel several chicks off because they stuck to it before they dried off. Now that may have been due to the humidity being a bit low, but it seemed more unforgiving of those issues. Hatch date is 5-8 and I have 18 eggs in(I have culled none so far).