Good Luck.I do cartons all the time.....That's what I do except this time. I left a batch in the carton for lockdown because I forgot to put it on my calender and had to adding during a hatch.To make it as quick as possible, I left them in the carton. Some people say it works better but the one time I tried, not one hatched and most were positioned wrong. But that could have been from shipping. They were shipped on their sides and loose in saw dust. So another try at hatching in the carton. They looked to be very active when I put them in. Although they are being used as a jungle gym by the chicks hatching right now.![]()
Perhaps you did this, but I cut holes in the bottom of each cup.............
Good Luck................