After a trip to Mesquite Nevada our car was stained badly by hard water spots from both a sprinkler system and a car wash. We tried several products and still had horrible spots that would not wash off our black vehicle. So I decided to try Tub and Tile and the spots disappeared before our eyes. A truly amazing product! I’ve used it for over 20 years, but never knew just how useful it could be on other problems. Thank you Melaleuca! Your products are the best!!