We're using pine shavings (mostly since that's what they loaded into my car at the feed store). Anybody have a pro/con list for the pellets? Where do you get them? Also, can they safely go into the composting pile? What I like about the shavings is that they go right into my compost pile for next year's garden. Can you do the deep composting method in the coop with the pellets? Thanks for any input.