Has anyone used Baking Soda in their run to keep down the smell, etc? I'm wondering if a big box of A & H baking soda would work to keep down the smell. BS is cheap for a big 12lb bag for less than $7 and it is food grade. I don't know what effect it may have on chickens though. A large bag should be enough to sprinkle pretty liberally all over a run like mine which is 22'x18' and then work it in with a hoe. If its OK to use it probably would be as cheap as DE and easier to find. Anyone have any thoughts on this?