Pumice Stone Tile and Concrete Cleaner snaps onto standard telescopic poles. Removes lime, rust, stains and algae deposits from ceramic tile, molded or pneumatic forms, concrete surfaces pools and spas. Ready to use; no gloves or applicators needed. Works through abrasive action and Quickly shapes to curved or flat surfaces.Rubs out deposits without harm to pool surfaces. Chemically neutral; won't upset pool pH balance. Safe for hands and around children or pets.