I just bought blue bottle flies for the second time. I have a 6 month old male Panther. He loves them. I have also had great success hatching silkworm eggs. I use the incubator that mulberry farms recommends then had them at 72 degrees, I think the lower temp kept them from growing fast. I hatched out 250 and was able to feed them all off. The incubator was an upfront investment but I feel like it was worthy it in saving from buying silkies already hatched. It was a time invedtment though to feed them until they were large enough to feed. Just make sure you wash and dry your hands and before messing with them.