I am attempting to acid stain my stamped concrete driveway. I have etched it with muriatic acid. Ihave nuetralized it with TSP. When I wet it with water the concrete stays white where armour all spray has been used on tires over the years. I know the acid stain will not penetrate these 8 area’s. I have scrubbed them with TSP, Driveway degreaser, 3300 psi pressure washer etc. What gets the armour all out?


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