V23500 Valterra Toilet Cleaner Since 1981 Valterra Products LLC has been a leading supplier of brand name product lines to the RV Pool and Spa and Plumbing industries. Valterra’s maquiladora Contract Manufacturing Division offers low-cost custom manufacturing and assembly services to client companies seeking to reduce costs and improve the bottom line. Removes Hard Water Build Up Effective Without Harsh Chemicals Limited 1 Year Warranty Used For : Porcelain/ Plastic Toilet To Remove Hard Water Build Up Unit Size : 24 Ounce Unit Type : Bottle Unit Quantity : Single