For a breath of fresh air simply hang the reusable Smelleze® pouches in your lockers locker rooms or intake air ducts and smell the difference. To rejuvenate periodically simply heat in a microwave 2-4 minutes or place in direct sunlight for a day and reuse. Replace when rejuvenation does not help. Smelleze® can work for years so it is very cost effective. Smelleze® is non-toxic safe reusable recyclable natural odorless non-flammable and non-caustic. Smelleze® is an ideal environmentally friendly solution for eliminating stinky locker room odors without adding pollutants to the air you breathe. It does not contain VOCs harmful or ozone depleting chemicals and is especially beneficial for those suffering from allergies and chemical sensitivity. No fossil fuels are used in the production of Smelleze® odor control media.Room Smell Control Pouch is an ideal environmentally friendly solution for eliminating stinky locker room odors without adding pollutants to the air you breathe. It does not contain VOCs harmful or ozone depleting chemicals and is especially beneficial for those suffering from allergies and chemical sensitivity. No fossil fuels are used in the production of SMELLEZE Odor control deodorizer media.