General description The 8PCS Scum Balls for Spas, Hot Tubs, and Pools are high-quality oil absorbent sponges designed to keep your water clean and clear. Made from upgraded sponge material, these balls effectively remove dirt, body oil, foam, and other residues, ensuring your pool or hot tub remains tidy. They are reusable, elastic, and easy to maintain, making them an essential accessory for any pool or hot tub owner. Technical specifications Material: Sponge Size: Approximately 3 inches Absorption capacity: Absorbs more than 41 times its own weight in dirt Measurement allowed error: +/- 1-3 cm Usage To use the scum balls, simply place them in your pool or hot tub. Their floating design allows them to move effortlessly, cleaning all surfaces without manual labor. Once they are full, squeeze out the absorbed oil, rinse the sponge, and they are ready for reuse. Other information