Turns ordinary tap water into the world's most effective chemical free cleaning agent, Liquid Ozone. The O3 System creates liquid ozone by passing 4,500 volts of electricity through oxygen molecules, transforming them into ozone and then infusing the ozone into water. Liquid Ozone will remove germs, odors, stains, mold, mildew and many other contaminants on any item or surface, including food. Safe, natural oxidizer and cleaner. EarthCare®.