Made from natural mineral granules--totally non-toxic. Odors caused by bacteria have a natural positive electrical charge; this mineral has a natural negative electrical charge so it draws odors into and onto countless crystal micro-pores which trap the odor and gas molecules. Odors are removed from the source, NOT covered up. When no longer effective (about 3 months), put outside in the sun/fresh air, for 4-7 days, and it will recharge. Cloth pouch fits inside deodorizer compartment in diaper pail. Comes with stick-on Velcro attachment in case your pail does not have a special compartment.