For removing hard water， rust， mineral and mildew stains from ceramic tile， grout and concrete surfaces. The 100% natural pumice material effectively dissolves stubborn stains and won't harm your pool water. The stone fits comfortably in the palm of your hand， measuring about 6 in. L and 1 1/2 in. D. Keep your tile and grout clean and looking new at all times.
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 gently rub the stained or scaled surface until clean
Pumice stone measures 1 1/2 in. x 6 in. for easy-handling
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