OK, so here's a trick I learned when I had my barn. There are a couple of brands of wood stove pellets that are the exact formula as the horse pellets. (You have to read the label for ingredients; you want the organic ones.) In the spring, when Home Depot etc are getting rid of whatever stove pellets they have leftover from the winter, you can buy a pallet or two at a greatly reduced price -- and they're cheaper than the horse packaged ones anyway -- and keep your stalls very well tended. I used the pellets very thickly over my stall mats 'cause I didn't like the mats to get wet at all. (I hated using the lyme.) The horses could lie down really comfortably in the fluffiness. I think the only downside is that some horses will eat them ... in which can you have to go back to shavings.