Earthworms organically improve the quality of your soil by adding nitrogen, moving deep soil nutrients closer to the plant roots, aiding in moisture retention and increasing aeration and drainage. Simply place cocoons in the soil when you plant to ensure a healthy start. Earthworms are also great additions to your compost pile because they speed up the process and give you a better end result. Each cocoon contains 1 to 10 eggs. Package of 50.