Fred's Enzyme Carpet Steam Juice is highly concentrated, biodegradable, non hazardous, is a safe pH, and has optical brighteners. This liquid is designed for use in upholstery and carpet extractor machines. Because of its liquid form, there are many advantages over powder types: Instantly mixes and dissolves in water, never settles out or clogs lines, incorporates grease dissolving enzymes and is easier to mix. This professional formulation includes odor neutralizers that helps to remove odors and leaves a clean, fresh scent.