Rola-Chem Scumbug Oil Absorbing Sponge, 4 CT - Also Includes a Pool/Spa Cleaning Sponge Bundle also includes a Pool/Spa Cleaning Sponge that removes dirt and grime without the use of harsh chemicals SCUMBUG absorbs 40 times its weight in body oils and suntan lotions. Also loves pollen! SCUMBUG is 300% more surface are than the "Ball" and can not get clogged in the water lines Place SCUMBUG in pool skimmer (fit all) or free float in spa and flip over... when saturated, squeeze out, clean and reuse! Improves filtration and when placed in clean pool or spa, SCUMBUG helps to eliminate the formation of a scumline Under normal conditions, SCUMBUG should last an average swimming session Under normal conditions, SCUMBUG should last an average swimming session.