Smart Technology: When encountering the wall, the pool cleaner will automatically reverse. When the cleaner detects that it is not in the water, it will automatically stop running and emit a "beep" sound as a reminder.
Non-Toxic Floating Pool Blok Pumice Stone for Pool, Spa, Tile Concrete Cleaning Block FREE DOMESTIC SHIPPINGSize 5 3/4x 2 3/4x2 3/4 in (14.5x6.8x6.8 cm) Recommended by Pool ProfessionalsThis original gray pumice cleaner is trusted by millions for 75 years and cleans where chemical cleaners fail.Quickly erase water and chemical rings, rust, algae and mold stains.***Renew tile and concrete.Safe for tile and concrete.***Try on a small area first. Thank you for your business and have a phenomenal day!
Smart Technology: When encountering the wall, the pool cleaner will automatically reverse. When the cleaner detects that it is not in the water, it will automatically stop running and emit a "beep" sound as a reminder.