I like chickens but have never fed them mealworms. I grow mealworms for my bluebirds. I have them in a Walmart plastic container, about 18 x 30 inches, with a mesh square in the top. I have used only wheat bran and add carrot or potato, which I thought was nourishment. I add more wheat germ when the medium gets to look more like dirt than bran. I use several layers of newspaper over the top and mist it about once a day for moisture. Eventually the container gets too full. My questions are: Is the laying mash more nutritious? Why unprinted paper? What do you do with the old growing medium? Can you dump it in the garden? Does it have mealworm eggs in it? Many thanks in advance.