The Star brite AQUA Water Shock is a 16 oz product designed for instant odor and bad taste removal from food-safe water tanks. It targets and neutralizes unpleasant tastes and smells in RV and boat water supplies, and can revive water systems after periods of inactivity. One ounce of this product treats 10 gallons of water, and it is compatible with Star brite Aqua Water Treatment & Freshener.