GLB Pool & Spa Products 71114 1-Quart Strike Out Algaecide No waiting to swim - treated water can be used immediately. Application: Dilute with at least nine parts of water. (See dilution chart on back of bottle.) Sprinkle solution around edge of pool. Chlorine, bromine and ozone sanitizers, as well as salt water pools. Apply under sunny conditions for most effective results. Apply initial treatment to a freshly filled pool or at first visible signs of algae growth. This item is not for sale in Catalina Island