Star Brite 097116 Water Shock 16 Oz, 16. Fluid_Ounces Instantly removes bad taste or smells from boat or RV's potable water Ideal for use after seasonal storage to "freshen" water tanks Removes Chlorine, Sulphur, Plastic or Metal Odor and Taste Provides long-lasting effect, even in extreme temperatures 1 fluid ounce treats 10 gallons of water