I am going to use shavings in my coop (PDZ on the poop boards). This is the best deal for shavings I have found around me so far: https://www.tractorsupply.com/tsc/p...ium-pine-shavings-covers-8-cu-ft?cm_vc=-10005 How many bags would I need to get a decent layer in an 8x8 coop?