THE BUG is Instatiable! Devours scum, slime and grime from pools and spas. The benchmark of any scum collector currently available in the pool and spa market. Absorbs 40 times its weight in body oils and suntan lotions. Also loves pollen. 300% more surface area than the ball and can not get clogged in the water lines. Place THE BUG in the pool skimmer (fits all types) or free float in spa. When one side is scummy, flip over...when saturated, squeeze out, clean and reuse. Improves filtration and when placed in clean pool or spa, THE BUG helps to eliminate the formation of a scumline. Under normal conditions, THE BUG should last an average swimming season.