You won't believe how well this works. It is the best performing cleaning solution available. The toughest dirt, grease, grime, bug splatter, brake dust and road film are all lifted with this spray on/rinse off product, leaving a sparkling, streak-free clean surface that keeps bikes looking like new. Gentle for daily washing, yet effective even for the dirtiest build-up. Contains no petroleum solvents or harsh chemicals it's an aqueous-based, non-flammable product that will not spot-blanch metals if thoroughly rinsed. Excellent for aluminum auto or truck wheels.