PoolStone Swimming Pool and Spa Surface Cleaning Block With Handle by Earth Stone International

Description

Removes rust, mineral build-up, mold, mildew and hard water stains with ease, Safe for most pool surfaces including tile, grout, concrete, and gunite, Not recommended for vinyl, acrylic fiberglass, wood or chrome surfaces, Measures: 4 X 2 X 3 inches plus handle, Non-toxic and chemical free