Well if you just through them out or feed them to your hens rethink! you could be saving the earth and growing thoes girls more food. We are fast approcing planting soon but plants grow faster when its warme rso start your plants in side in half egg shells. Rinse them out let them dry and then you can start a plant in them! Just stick the egg shell with your sprout right in the ground. The egg shell bio-degrates and your plants will thrive.Better yet your girls will come begging for that fresh produce wile your eating it!