It's composted. Just commercial bags I got at the local store. We have chickens so could use that too as we have 3 large compost piles but I don't want to use it for indoor growing as it has all sorts of bugs in it that are fine in the veggie garden outside but may get out of hand inside. Every spring one pile will get used in the garden and a new batch started. Fresh chicken manure will certainly fry plants as it's so high in urea nitrogen. Got moss in your lawn just spread an inch of fresh chicken crap over it. Kills the moss and grows grass great.
The first buds I grew in Calgary back in '78 were grown in 5gal pails of dirt from the poplar woods and sheep shit from my father-in-law's farm under lots of T-12 lights. Weren't much to look at but never got any complaints from friends at the time.