Our closet sachets are made of linen and cotton and are designed to help your closet fight odors and moths! Slip over a hanger hook or on a doorknob and simply squeeze to refresh. No need to worry about refreshing for years. Simply squeeze to agitate the lavender oils trapped inside each bud. Years from purchase you can add lavender oil to the fabric. They're a must-have item for woolens and keep the rest of your wardrobe sensibly scented - naturally!