Carpet Extraction Rinse Effectively Removes Hard Water Deposits And Neutralizes Residue From Previous Cleanings. Versatile Formula Is Strong Enough For Advanced-Generation Carpet Fibers At Low Dilution, Yet Delicate Enough For Wool Carpets At High Dilution. Specialty Rinse Also Makes Salt Residue More Soluble, Meaning Less Passes To Remove Winter Salt, Leaving To Tacky Residue.