I would like to say that this product is magic. I had installed white tile outside on my Tiki hut I left my four iron chairs in a puddle 2 days. I went by and I noticed a round rust stain all over my floor, I went crazy using every product, Clorox, Vinegar, Degreaser, Softscrub w beach u name it I used it. I found this product got it and put it on the rustic areas, like MAGIC it disappeared in front of my eyes Amazing Great job!