Our water spot remover, wsp, removes water spots, mineral build-up and tough stains. With a strong acidic mixture it can dissolve residue and build up. Application is an easy wipe-on, rinse off process and it can be used around the house and on windows, vehicles, RVs and vessels and any resilient surface. Clear up and and clean up your life with a product that’s surprisingly useful and functionally easy for every day and every season cleaning.