MTWEAR Hot Tub Scum Absorber, 6 Pack Spa & Pool Scum Eliminating Balls,hot tub scum Balls,Scum Sponge for Spa Hot Tub, Hot Tub Accessories, Oil Absorbing Sponge for Hot Tub SkimmerBrand: MTWEAR Color: Blue Features: Effortless Oil & Scum Removal: Add after filling the tub or pool, and leave it in, It instantly attracts and traps body oils, lotions, sunscreen residues, and floating foam, keeping water crystal clear. No setup or activation needed! Hand or machine wash after use. Air dry for reuse. Extends Equipment Life & Saves Money: Our Hot Tub Scum Absorber core reduces strain on your filter and pump by capturing contaminants