Pumice Stone for Swimming Pools, Spas and other Surfaces HDX # 62665 # 570402 62665

For tackling tough stains like hard water, rust and mildew from ceramic, grout and concrete surfaces, using a pumice stone ensures a thorough clean 100% natural pumice is chemically neutral so when using to clean pool tile, rest assured the pumice will not harm or change your water's chemistry Do not use on over-glazed decorated tile, glass, vinyl, fiberglass, wood, polished metal or plastic surfaces always test a small area before cleaning on any surface Easy-to -use, simply wet the stone and g