Compost - Japanese rhinoceros beetle larvae poop, and lots of it

It's early spring, and I opened up my compost bin of leaves from last year. I carefully removed rhino beetle larvae (kabuto mushi) from the pile and put them in a new home. The larvae ate and ate and left a lot of poop (frass). At first I didn't realize it came from the larvae because the pellets were so big. Anyway, there isn't much online information available about using this frass as a fertilizer.  I also checked a bunch of Japanese sites. There were a lot of comments saying that the frass inhibits root growth and results in stunted growth. And then there are comments that say it works great. I guess I will just have to give it a try and see what happens. Please share any thoughts, comments, experiences. By the way, in this pile, I didn't see any worms. It started as a 1 meter tall circular bioreactor made from chicken wire and black weed barrier woven plastic. Started in May and it was pretty much finished after 6 months.