Tru-Rinse is a specially formulated mild acid solution with a pH of 2.5-3.0 that is used as the final step in the wet cleaning process. Tru-Rinse will remove soil and shampoo residues, stabilize dyes, and prevent browning in carpet, rugs, and upholstery. Tru-Rinse is safe on natural and synthetic fibers. Carpets will stay cleaner longer and will have a softer feel. Also effective at dissolving urine deposits when used as directed.