In the outside yard I have bedding from the coop, grass clippings, shredded paper that go into a short wire cage. I then just dump food scraps on top of that and the chickens will work it around. When it looks “broken down” I then move it to the bioreactor.
We also have a covered run that we do a deep litter method. So we scatter wood chips, straw, grass clippings, leaves, shredded paper a few inches deep. Scraps in the winter just get tossed in the run and chickens work it into the litter. We also make bio char that gets tossed into the mix and the chickens mix that into the compost. If it starts smelling we just add more carbon and the chickens will work that into the rest.
The part that I’ve been cleaning out is bare “dirt”. The microbial life is such that no dropping are building up on the bare end. They just disappear.
I’m just cleaning out the covered run after 2 yrs and theres been no smell at all. What is coming out is almost perfect compost by look and feel, I haven’t looked at it under a microscope.