Scum Beetle's oil-absorbing sponge powers through scum, slime, and grime in pools and spas like a champ, soaking up to 40x its weight in body oils and suntan lotions. Pollen, too? No problem! With 300% more surface area than the "Ball" , Scum Beetle will revolutionize your swimming experience. Place it in the pool skimmer (it fits all) or free-float in the spa, then, when it's full, just squeeze it out, give it a quick clean, and reuse! Plus, when you take the plunge with a clean SCUMBEETLE, you'll kiss scumlines goodbye. Under normal conditions, your SCUMBEETLE should last for the entire season.