Completely different climate and soil, but we started with sand in our chicken run. Loved it the first year. I scooped the poop twice a day and it was nice and soft for the chickens. By the second year, we were having issues with the main space compacting like concrete and having to use a hoe to break up the surface. The sand also began to smell anytime it got wet. We ended up removing the sand and spreading it on part of the driveway. Our driveway stunk for months! We now use a combination of wood chips, pine needles, shavings and straw to build up a base taller than the surrounding ground to keep the run dry during our spring floods.