Everyone agreed on the perfect shape and just the right height and the thick, warm scent of the pine filled the air with the first chop of bark. Then the needles completely filled the room with their fragrance and hearts with memories from Christmases long ago. Scent Notes Top: Cedar Leaf, Frosted Dew DropsMiddle: Spruce Christmas TreeBase: Sugar Crystals Product Details Each Fresh CarGo® is made from fragrance-infused paperboard and hangs from a rearview mirror. Replace when the fragrance strength is no longer noticeable. Fresh CarGo® Hanging Car Scents last from weeks to months, depending on the power of the fragrance and the size and average temperature of the automobile. Do not leave your Fresh CarGo® laying on any surface, as each has some degree of essential oils in the fragrance formula, which can damage delicate surfaces, including but not limited to wood, plastic, delicate fabrics, synthetic carpets, etc.