gw - like i said, it may have been that the cheese fly eggs got lain on the compost before i put it in the soldier fly unit. I first noticed one of them in the unit a couple weeks ago (their numbers are increasing.) I think part of the problem may be that my can is to deep and the bottom of it is filled with composting (rotting) leaves. There really isn't much soldier fly activity down their because they're at the top where the good stuff is being put in. I think I need to empty my unit to get the decomposing leaves out and keep it less full. Even with some of the problems I'm having I'm still producing a LOT of soldier fly larva. I feed 30 bluegill in a 300 gal stock tank 3 times a day till they won't eat anymore.