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review from amazon ROG 3 Tub and Tile Bathtub Cleaner K-1 Kit I have a kohler tub for about a year now, when the slip guards started to look dirty I was on a mission to get them cleaned. I tried most everything recommended nothing worked until I got R.O.G. It took two applications to get them cleaned so I suspect if your tub is very stained it will take work for you to get them clean. I maintain the tub now with this product. I would buy it again. By K. Strawderman
slip grate into gallon size ziploc bag. Do not put any holes in bag. Pour 2-3 T. ammonia into bag. Seal bag & let sit for 12 hrs. Do this overnight. Take grate out of bag in kitchen sink. Rinse the grate thoroughly and scrubb with a nylon scrubber.