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We have an older rug in our entryway, a 5x5 octagon shape, and the rubber backing has been flaking off for some time. Rather than buying a new rug, I thought I would give this product try. I first used a broom to get as much of the loose flakes off as I could, then gave it a good shake. There was plenty of product to cover the back of the rug in 2 coats as suggested. We let each coat dry overnight. I definitely recommend.