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Black solider fly larva are great decomposers, the after product is up there with EWC. Both are great in different ways, BSFL eat meat and dairy products, much more efficient feeders, the harvested larvae are a high protein food source (great for chickens and reptiles), the combination sounds ideal (BSFL compost ran through worm bins). They are very fast at their job and take a little more effort to take care of and to breed (indoors at least). I recall reading about them not being able to breakdown certain things such as grass, paper, and a few other things. Since then I've always thought about a system incorporating worms and BSFL but have never actually played with BSFL. Also to keep it on topic, they could possibly be a chitin source ! DRY EM AND CRUSH EM!
I forgot to add that we stopped composting food waste and fed it to "the barrel". I was shocked at the voracious appetite for chicken poop.
The pine flakes just did a normal compost with absorption of the larvae waste.
The larvae group together in cold weather like honey bees. I only had to buy them the one time. They would overwinter on their own (down here in the south which is actually colder than most places in CA, OR, and WA.
The actual fly form only live about five days and have no mouth parts....they exist to breed and lay eggs. They prefer to lay eggs over compost they came from...... it's a smell thang. Placing corrugated plastic strips or popsicle sticks over used compost is best. The eggs hatch and the larvae fall into the compost.
You can buy the worms and keep them in moist coco coir and feed them food scraps (no high acid food like tomatoes). When they stop feeding at the largest instar cycle.....the fly form will start to hatch out.....pour them into fresh compost outside with "egg strips" and you're on your way to hundreds, thousands, and millions.