Id love to use sand but my coops and area would just not do :\ I use cob bedding myself
I used to use straw but found that it attracted parasites and pests. The cob is highly absorbent and even if the birds smash it down whith poop all I need to do is take a rake and scoop out the poop pancake to reveal clean bedding heath and then rake once or twice and viola! Good as new. It also doesn't create as much smell or mud as shavings or straw which either breaks down or doesnt break down at a fast enough rate. It dries fast and is only 5$ a bag at my feed store and I only need 2 bags to cover both my coop and run in a 1-2in layer = 5×14ft just a idea
+ it composted amazingly when I emptied it out!

