Long-lasting odor control. Use this simple, set-and-forget wicking block to quickly suppress odors in virtually any location. Available in multiple scents, this natural block can provide odor control for months depending on application. Each block holds more than three times its weight in active ingredients. Place in vents, ducts, airmovers, automobiles, anywhere long lasting odor control is required. Place in small room or closet, furnace plenum or duct system register, in the auto or wherever a fresher environment is desirable. Attach to intake of carpet dryer to control wet carpet odor during the drying process.