303 spot cleaner is a premium cleaner formulated to remove the most difficult carpet and upholstery stains. With 303® Spot Cleaner, 303® Products is rewriting the rules for cleaning products. 303® utilizes a proprietary blend of sequester agents, surfactants and hyper-wetting agents to lift and suspend oil, grease and dirt to be easily wiped or rinsed away. It is completely safe for use on all water-safe fabrics to quickly remove even the most difficult stains. And unlike soaps, detergents and other cleaning products, 303® Spot Cleaner rinses away completely leaving NO residue.