Rola-Chem Scumbug Oil Absorbing Sponge, 1 CT Absorbs 40 times its weight in body oils and suntan lotions. Also loves pollen! 300% more surface are than the "Ball" and can not get clogged in the water lines. Place SCUMBUG (tm) in the 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.