Sorbo Hard Water Stain Remover was developed especially for cleaning and removing stains from glass and tile surfaces. Primarily Sulfamic Acid in a powder form Sorbo Powder goe to work quickly on stains.
Sorbo Stain Remover takes off hard water stains, building run-off and sprinkler stains from windows and other glass surfaces like shower doors.
Instructions: Just mix the powder with water to make a paste and apply it to the surface using a soft wet towel or white nylon scrub pad.
Sorbo Stain Remover will also remove silicone glue and is safe to use on anodized metal frames.