I've always gotten my cop litter from the local feed store, 1/2 mile away. It's family owned. Recently, they switched brands of pine shavings, and the new bags are little more than compressed sawdust, definitely not kiln-dried & fluffy. My last bag I stored in the garage and then opened on a sub-freezing day. It looked like a giant tan ice cube after I took the plastic off. I had to chip it open with a shovel & rake it around hard. Now a week later I've been poop-scooping through it & there are little ice crystals everywhere. Should I just pitch it all out (in the woods) and put in a new bale of kiln-dried chips from TSC (14 miles away!)? I hate to waste a 1/2 cu. yd like that. Half my chickens are floor-piling silkies & cochins. Will they get too cold in January with the icy litter?