Chemical Guys AIR_300 Car Scent and Leather Scent Combo Pack (16 oz) (2 Items) Concentrated: Can be diluted with up to 2 gallons of distilled water Eliminates odors and reduces new odors over time Water-based fragrances won't stain fabrics, carpets or upholstery Formulated to last 5 times longer than conventional car air fresheners; Subtle scent lasts for weeks The date listed on the product is the manufactured date