It greatly impedes mildew formation, and helps guard against the sun's harmful UV rays. Long lasting, it adds years of life to a wide variety of outdoor fabric products. Patented molecular structure. When dirty, restore using Clean All spray. The Scum Ball is available in singles and two-packs.
Helps keep any spa or hot tub water clear and smelling fresh.
Truly amazing effectiveness. Float in spa or hot tub. For pools place in skimmer. When saturated, just squeeze out and refresh using Clean All non-foaming spa cleaner. Simply add to the water and allow to circulate.