Mine is set up and ready for tenants. I loaded up with rotten crab apples and put it next to an old BioPod unit. If the crab apples don't attract, I'll try the usual tomatoes etc. Got a lot of crab apples so I hope they work...
I would expect the apples will work, the more rotten, the better.
One good way to attract BSF females is to put some vegetables in a black plastic bag, seal it, and leave it in the sun until it starts to break down. BSF love the smell of fermentation, whether it's vegetables, grain, or fruit.
