Black Soldier Fly Larvae (BSFL) help stabilize large amounts of putrid waste, such as restaurant scraps, very quickly. This reduces total composting time, smell and vermin. Worms then eat the BSFL castings. Good for a large system, but totally unneeded for the home worm-bin. You can also feed to chickens and fish the BSFL. Great protein. Around here if you have the putrid wet waste, they will show up!

"What's the benefit of having these in my worm bin?" Beyond their adoarable cuteness is their ability to handle items that normally are not able to be handled in large amounts by just a vermicompost bin. Anything that people do not want to be around in high heat for many days will disappear. Think fish guts or pig poop. If you are seeing these add a lot more dry bedding so the worms will get some oxygen.

I am fascinated by the potential of Black Soldier Fly Larvae (BSFL) for organic waste handling. "SF larvae can digest over 15 kilograms per day of restaurant food waste per square meter of feeding surface area, or roughly 3 lbs per square foot per day. A 95% reduction in the weight and volume of this waste was also noted. This means that for every 100 lbs of restaurant food waste deposited into a unit, only 5 lbs of a black, friable residue remain!"

Here is a link that might be useful: Black Soldier Fly Larvae Composting