I have 15 chickens... 14 hens and a retarded rooster. Everyone says chickens destroy their yards by eating grass and scratching dust baths... Mine don't eat grass and walk BACK into the coop to scratch into the sand beneath the wood shavings I scattered around the coop for dust baths... I irrigate my lawn and I know there are all kinds of neat bugs in it yet my hens just don't care, or don't do much to control the lawn. I wonder if I'm expecting too much lawn control from 15 birds.