I have been reading a lot about the deep litter method, as well as using dry leaves. I raked up leaves last year and shredded and bagged them. I had intended on using them in my compost but only ended up using a bit. I still have 4 bags sitting in my shed that are over a year old. Question: Are these safe to use for coop and run bedding? I'm concerned that since they have been sitting so long, they might be moldy (although the shed is dry). I'm eager to get more down on the ground given these cold temps. Thanks!