Drain and trap cleaner and odor eliminator. The double action of enzymes and d-Limonene solvent, to loosen and digest fats, oils, grease, cellulose, proteins and starches. Non-toxic to humans and pets. This is not an acid based product and it is totally safe for septic systems, leach fields, sewer lines, (cast iron, copper and plastic), floor drains, indoor plumbing and fixtures.