I live in a small town and really struggle to find straw or hay (and most supplies for a backyard flock actually). I can get lucerne (alfalfa?) but it's expensive, and I've tried wood shavings but the chickens scratch through it and it all gets kicked out of the nest boxes. I was searching through our local farm supply store and found coir. Has anyone tried it before, could it work? I'm getting four 1year-old layers next week and I'd like to make the coop as comfortable for them as possible.