My wife raises show rabbits, and about a year ago we switched to stacking cages with trays instead of hanging cages. (We switched to an insulted building in order to run an AC window unit due to heat issues every summer)
In order to reduce on the ammonia and oder, we have been using, as litter in the trays, a product called Equine Pine which is "made of 100% pure Pine pellets". After use, the pine pellets seem to turn into something closer to a corse sawdust. My wife also sometimes sprays the litter with a product called Zaps It.
So we have a slowly growing pile of former pine pellets and rabbit manure. (All of which at one point was soaked in rabbit urine). There's also a little rabbit fur and a bit of straw.
The pile isn't really doing anything though. The parts of it that are a year old look about the same as parts that were only added last week.
Should I buy or make a compost bin for it? Do I need to add something else to it?
Would red wiggler worms help, or would this be a medium that you could raise them in?
I've read a little about it in the past, but I don't have any experience with composting.
Edit: The pile is about 8 foot by 5 foot, and is maybe 2 feet tall at the tallest point. With nothing to contain it, it's kind of a sprawling pile.