The worry is that the adults may have visited carrion or feces and then come to the culturing bin. I'm not sure if they can transmit bacteria or parasites by touch? For example thier body parts that came in contact with it.
I understand what you mean about how you feel about the fly but butterflies and caterpillars don't have the same feeding habits. I'm not being pessimistic because I would really like to be able to get a clean culture of wild (aka: free) flies especially ones with thier characteristics.
I'll stick to this forum because I'll be posting the answer back on the other forum. It's inconvenient for me going between three forums. I guess other people besides myself are waiting for the answer too...
