Keeping the Cocoa fibre clean

[Zephyr]

this is new to me - please explain

I just started using dubias as a clean-up crew in one of my coconut fiber enclosures. If the snakes poops, by the next morning the cockroaches will have eaten all of it.
They ARE decomposers in the wild; this is actually more of a "natural" diet than various pet foods or even fresh fruits/veggies.