(22 oz Spray) - Star Brite Instant Black Streak Remover

This stuff is amazing. I have cleaned my camping trailer roof with it, gutters. Cleans better than any other product i have used.

Got black streaks off our RV with no effort. Love this product and less expensive than many others out there.

It did indeed take ALL the black streaks on my fiberglass sided rv. But it also took some of the shine off. Oxidation maybe? It also seemed a bit harsh on the decals as well. However, I believe a good polishing followed by wax will sort this out. My rv is a 2002 so the gel coat does have plenty of age on it. I did follow the directions exactly. Just know this stuff isn’t to be played with, but respected.

I was trying to get black water stains removed from the tub after a backflow from the wastewater filled my tub in an apartment building. I saw this advertised and it matched a description of my project but it was ineffective. The only way I was able to resolve the black stains in the tub was fill the tub with water, then pour in a half-gallon of liquid bleach. I let it sit overnight and the bleach literally dissolved the stains. I was astonished but then I realized that is chlorine bleach will do. It even dissolved old rust stains that were there before the backflow incident. The product might be right for other hard to clean projects but not this one. I'll keep it around and use it again for something else and update this review if I get better results.

Does not work properly, says to spray and leave for 30 seconds then wipe, it only takes off some black streaks and makes white streaks. Tried scrubbing, power washing it off and it’s left a residue all over my camper. Absolutely awful.