SCUMBALL Hot Tub Scum Absorber Reusable 3-inch Foam Balls 4-Pack — Skimmer Surface Cleaner Prevents Scum Lines

SCUMBALL Scumballs are reusable 3-inch molecular foam absorbers that float or sit in skimmers to capture oils, lotions, and body-care residues before they form scum lines or clog filters.

Designed from the original patented USA-made molecular foam used by Horizon for over two decades, these SCUMBALL scumballs trap contaminants that make pool and spa surfaces look cloudy and create maintenance headaches. The four-pack gives ongoing protection for hot tubs, spas, swim spas and pools of any size. Each ball is engineered to absorb many times its weight in oily residue, stays visually white until it reaches capacity, and rinses clean for repeated use — simplifying routine care and extending filter life.

How do SCUMBALL scumballs prevent scum lines and sticky spa walls?

Placed in open water or tucked into a skimmer, the SCUMBALL foam attracts and locks away oils, sunscreen, lotions and hair products that normally float and adhere to surfaces. Removing these contaminants at the source keeps water clearer and reduces the need for manual scrubbing. Because the foam is highly absorbent, it prevents residue from collecting along the waterline and around jets.

• Absorbs body oils and cosmetic residues before they reach walls.
• Floats or nests in skimmer mouths without blocking flow.
• Reduces frequency of scrubbing and chemical adjustments.
• Visually indicates saturation by changing color only when full.

What maintenance does a SCUMBALL need and how long do they last?

Maintenance is minimal: rinse the scumball under tap water to remove trapped residue and let it air-dry; repeat until the ball shows discoloration that signals replacement. Longevity depends on use frequency, water conditions, and contaminant load, but each ball is reusable many times thanks to durable molecular foam and USA patented construction. This makes the four-pack a cost-effective, low-waste option for ongoing upkeep.

• Rinse with water; air dry between uses.
• Replace when the ball visibly changes color from white.
• Typical life varies by usage, often reusable for months.
• Four-pack keeps a spare on hand for rotation and continuous protection.

Will SCUMBALLs harm my filter or affect water chemistry?

SCUMBALLs are designed to work alongside your existing circulation and filtration without clogging equipment. Their soft, porous foam traps oils and particulates while allowing water to flow, so skimmers and filters don’t have to process the same load. They do not dissolve or shed particles into the water, and they don’t introduce chemicals that would affect sanitizer balance.

• Skimmer-friendly design prevents blockage of pumps or lines.
• Absorbs contaminants rather than releasing them into plumbing.
• No added chemicals; compatible with standard sanitizers.
• Helps extend filter life by reducing oily buildup on cartridges.

Who is this for: SCUMBALL Scumballs are aimed at hot tub and pool owners who want an easy, low-effort way to keep waterline areas and surfaces clean. They suit homeowners with frequent bathers, people who use lotions or sunscreens, owners of swim spas and hot tubs looking to reduce filter maintenance, and anyone who prefers reusable, economical cleaning aids over disposables. The four-pack supplies rotation-ready replacements so you can maintain clear, inviting water with minimal fuss.