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ProSpec’s Concrete Resurfacer is the cure for what ails worn and tired concrete. The product is formulated with a corrosion inhibitor that renews concrete, including structures exposed to deicing salt. Ideal for walkways, garage floors, and driveways, the resurfacer contains a modified polymer, is self-curing, and is easy to apply to horizontal surfaces. Cost: about $35.75 per bag. Bonsal American. 800-738-1621.