AquaCare Cleaning Mitts for pools and spas are sold pre-treated with a cleaning agent that packs a punch to remove tough stain, scale, and scum from your pool or spa while being user-safe and environmentally friendly. This product also contains a thin-plastic layer that provides protection to the users. Unlike many household products, this product is compatible with swimming pool and spa water as well as safe to be used on plastic vinyl, fiberglass, ceramic, stainless steel, aluminum, and painted surfaces.