All-new glass bottles.Optional dropper tips for accurately measuring small doses.Kills odor-causing bacteria and enhances taste of stored potable water.Controls slime buildup in water storage containers.Once treated with Aquamira Water Treatment and left sealed, stored water has a five-year shelf life.Treatment has a four-year shelf life from manufacturing date.Treats up to 60 gallons of water.Easy to use.No aftertaste!Made in the USA.