"The all time winner! Experience the effectiveness and economics of this powerful all-purpose concentrate which out-performs and replaces even solvent degreasers. Simply dilute with water to achieve the ideal strength solution for the job. Use on engines, door jambs, tires, carpets, upholstery, concrete floors and more. Effectively removes oil, grease, rust stains, carbon, dirt, etc. Free-rinsing, controlled foam. Certified “readily biodegradable” according to independent OECD-301 testing."