Soap-Free Procyon is an all-natural, water-soluble degreaser that has been formulated with water a conditioner that leaves carpet and upholstery softer and brighter without breaking down natural fibers, the company says. Applications include carpet and upholstery cleaner and spot & stain removal. The product is also non-toxic, colorless, odorless, hypoallergenic, biodegradable and environmentally safe.