Grease Monkey Pool & Spa Scum & Oil Chemical Remover For Swimming Pools The grease monkey is designed to absorb the surface oils and scum that can accumulate in your pool or spa from pollen, suntan lotion & body lotions, tree saps and body oils. Designed to absorb up to 45x its weight in surface oils helps prevent staining or scum lines from forming in your pool or spa Extends length of filtering cycles chemical-free One monkey will serve most pools for an entire season A second monkey may be used in pools with higher oil accumulation