Some of you know I have tried 3 times to hatch pinheads. This last try I took the sand/peatmoss medium home (having using the big crickets at the zoo as egg layers) for 10 or more days, no pinheads. I took the whole Rubbermaid bin and medium back to the zoo incubator and *****ed that I wasn't meant to raise babies of any sort. One day later the whole layer of eggs in the medium hatched. By the time I went back out for my workday all the pinheads were dead. My colleagues had a big laugh, said I just told them I wanted the crickets hatched, not kept alive. D**n it, I'm gonna try again.