You want bigger stuff too, sticks and such.I like this idea for our run. It's 25x30 and I'm thinking of starting a base with about 4" of a fine mulch mixed with yard materials - leaves, grass. Is this a good start?
It's best if everything is pretty dry, as in no longer green, so dry grass and and leaves.
I have a large walk in run and never 'clean' poops from the run,
and there is rarely any nasty odors. The bedding of a good mix of dry plant materials use facilitates this nicely, it's basically no maintenance other than adding more material from time to time. I was able to start with a big load of tree trimmings from the power company that had been aged(6 months) so I avoided the toxic molds that can bloom with fresh chippings. I collect dry leaves in the fall (stored in feed bags in a shed) and add them occasionally, and other garden trimmings. I let my grass grow tall, mow and spread it out with discharge pattern, leave it to dry a few day, then push it into rows with the mower discharge, rake it up and add to run.
This is what I started with.
This is after adding some sun dried grass clippings.