I saved some clipped grass from my lawn and covered them on the dirt under my big pine tree. Now I got lots of earth worms in the dirt. I feed my ducks over 100 every day. They are crazy with the snacks. Chicken are curious with the worms, but they don't eat them. I cover the dirt about 2 inches of grass and moist them when they get dry. Don't forget applying Cutter, as mosquito like them too.