Clorox Pool & Spa XtraBlue 3-inch chlorinating tablets are long-lasting pool sanitizer tablets designed for weekly pool maintenance. These slow-dissolving tablets effectively kill bacteria and stop algae growth while maintaining crystal-clear water.

The tablets feature a stabilized formula that protects chlorine from sunlight degradation, extending effectiveness over time. They also prevent corrosion, scale buildup, and staining on pool surfaces, helping preserve your pool's condition and appearance. The formula includes water conditioners that create a silky-smooth swimming experience.

Designed for convenient application in skimmers, automatic feeders, or floating dispensers, these individually wrapped 3-inch tablets simplify pool care. Each tablet contains trichlor (trichloroisocyanuric acid) as the active ingredient, along with 0.99% copper sulfate pentahydrate for enhanced algae control. The 80-count package provides months of pool sanitation for residential swimming pools.