A little disappointed that it doesn't work better. I have wheels with old lapped brake dust and it still hasn't come out. In fact, in my experience, this thing doesn't work any better than almost any pre-made cleaner, including things like Purple Power, Super Clean, etc. I find the ZEP cleaners available from Home Depot work better and cheaper.
Wipe New WW6PCRTLKIT: The Ultimate Brake Dust Defender for Your Wheels
12 Review
Revitalize Wheels and Tires Effortlessly with Meguiar's G190424 Ultimate Waterless Dressing – 24 oz
12 Review
Maxsa 37353 Park Right Tire Saver Ramps: Effective Flat Spot Prevention & Vehicle Storage (Set of 4), Black
11 Review
Enhanced Wheel Cleaner Plus - 750 ml - New Formula and Larger Size
11 Review