You want the water in your swimming pool to be clean and safe? Doheny"s fresh, pure, uncontaminated 3 inch pool chlorine tabs are a perfect balance of 90% stabilized chlorine and 99% active ingredients to stop bacteria and algae growth in its tracks. They stabilize against the sun?s destructive UV rays to prevent swimming pool chlorine burn-off. The chlorine is locked in the pool water so you use less swimming pool chemicals, which saves you money. Each chlorine tab is slow dissolving, and pool owners appreciate Doheny"s smart packaging. Individually-wrapped tabs control odor and make handling easier, and the 25 lb. bucket has an easy-to-open and easy-to-seal lid. All buckets are child-resistant.