Posi-Shell® and Odor-Shell® are effective at controlling odors generated from passive or active composting operations. Posi-Shell® was originally conceived for this purpose over twenty years ago; however, Odor-Shell® has built on this technology, leveraging an infused neutralizer to kill odors on contact. Both products allow compost to remain aerated even after coating. Additionally, Posi-Shell® and Odor-Shell® are made from earthen materials that integrate seamlessly into the compost when turned.