Product Review

The PoolStone environmentally friendly cleaning block is a powerful, effective, and safe cleaning tool for pools and spas. Removes rust, mineral build-up, mold, mildew and hard water stains with ease. Made from recycled materials which saves the equivalent of 1 glass bottle per block. Non-toxic and chemical free, PoolStone is safe for most pool surfaces including tile, grout, concrete, and gunite. Not recommended for vinyl, acrylic fiberglass, wood or chrome surfaces. Measures 6 X 3 X 3 inches.