Natural Chemistry Stain Free & Stain Free Extra Strength (XS)

Safely removes metal stains from swimming pools. Stain Free is a citric acid-based product the removes metal staining on pool liners and finishes – works great on steps too! Use in conjunction with Natural Chemistry’s Metal Free for the ultimate 1-2 combination for stain fighting. Stain Free (XS) Extra Strength is a premium stain fighter that contains 100% ascorbic acid that quickly removes metal staining without adding phosphates to your pool water. 100% compatible with all sanitizing systems and both ship in 1.75 lb. containers.