A fast-acting, industrial-strength, all-natural, biodegradable drain cleaner without chemicals, caustics, acids and solvents. Made from "a seven strain bacteria formula that uses the natural process of biological decomposition that has kept our environment in perfect equilibrium since the beginning of time. It's nature's way of recycling and renewing through a steady decomposition of organic waste matter and its conversion to simple, essential substances. This ongoing process is the work of trillions of tiny, naturally occurring, living microorganisms that use organic waste as their food and energy source." Can be used throughout the house. Safe (actually beneficial) for septic tanks.