The tub in my guest bathroom had become stained and grimy over the years. I tried just about every bathroom cleaner I could think of - even bleach. Nothing took the stains out completely. The other day I had an epiphany! I filled the tub with water and added some White Brite. I let it sit for about 20 minutes and when I came back, I couldn't believe my eyes! The stains were COMPLETELY gone and the tub was its original color. I put some White Brite on a dampened scrubby sponge and worked it into the stains on the walls around the tub and let it sit for about 10-15 minutes. I then rinsed the walls with the water in the tub. All the stains on the walls came out too. My tub looks new again! I am SO impressed by this and wanted to pass then on to others who might be experiencing the same problem. This is a great product and worth every penny. I will never scrub my tub again. Just let White Brite do the job!