Hi everyone! I'll find out next week if I get to be a part of a local test site for urban chickens! When the project manager came over to check out our space, the area that will work best for the chickens is currently sand. We put up a big play area for our daughter this summer in the backyard, and decided to sand the whole 1/2 of the backyard. It's about 6-8 inches deep. The coop will be pre built and brought it and I was wanted some advice on the best way to prep that space for the chickens to avoid predators digging in to the coop. I was thinking of getting concrete blocks or paving stones to put under the sand and elevate the coop and run slightly on the blocks where the coop and run will be put. (To avoid mixing sand from in the run and other sand in the area) Also, any advice on what I should mix something in with sand for the run?