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It seems that my golf cart batteries dripped onto a buddy's new concrete while my cart was parked there over the course of a few weeks while I rebuilt my storage room. The stains are orang/tan and I do have a couple of places where the concrete blistered. Not concerned much about the blistered area as I will skim it with some patch. The solution to the stain problem and how, please? What will remove the stain or bleach the concrete back to the normal off-white color? concrete sealing jacksonville