STAR BRITE Ultimate Fiberglass Stain Remover - Easy-to-Use Marine Grade Solution to Eliminate Tough Rust, Leaf & Waterline Stains for Boats and More - Maximum Cleaning Power Gel Spray

This stuff really works -- I was about to buy a new tub but saw this online as a last resort-- the tub was in bad shape and hadn't been looking this good since I bought the house new in 2014 -- two applications with 1st about 10 minutes wait looked great -- second about 5 minutes looked even better -- I had tried all types of cleansers including the vinegar and baking soda mix -- nothing got the grim out -- best 20 bucks I've spent in years

I moved into this house nearly 12 years ago. The water was hard and had left a "drain stain" in the shower about a foot long - dull, but still visible, and I hated it. Nothing I used took the stain away and I assumed I was stuck with the stain. Even my cleaning lady had no answers for its removal. Then I saw this Fiberglass Stain Remover - I thought "fat chance" but bought it anyway.I sprayed it as directed, not much difference. I then sprayed it again and left it for several hours - stain was disappearing. Then I sprayed again and poof! the stain was GONE. When the cleaning lady came, I showed her - she was shocked. She ordered 2 bottles for herself and has been using it ever since. I am thrilled and amazed - the shower looks new. And after living with that stain for 12 years - it's honestly gone! Ha! Now I don't swear when I get into the shower! :) :)

I've had hard water stains all over my fiberglass shower enclosure for years. It was really bad around the bottom of the tub. Tried all the internet remedies. It looks clean while wet but after drying the stains were still present. Not with this product. Sprayed 2 applications and rinsed but only a minimal changes was seen. Tried a 3rd time but this time I used a scrub brush. With barely any effort all the staining was lifted out. Great job, just not a spray on and rinse off as suggested in the directions. Very pleased with the results.

I spent an hour scrubbing a disgusting shower pan a tenant left. Still had stain. Saw the glowing reviews on this product and tried it. Nothing. Used another product for the grout, which was just basically bleach. Somewhere, the stains disappeared on the shower pan. Not on the grout though. Had to demo the shower. At least saved the shower pan. Since the stain didn't disappear with this product, must have been the bleach product. First photo, original mess. Second photo after scrubbing for an hour. Third photo, as clean as it's going to get.

It has worked very well for me, and been more effective than any other product in cleaning my shower stall.

Huge disappointment with this item. And that is upsetting to say because this was rather pricey in my opinion. Despite the description that this is a gel, it absolutely is NOT. It's a watery spray that does NOT stick to whatever you are spraying it onto. I bought this for my fiberglass tub/shower. Sprayed it on numerous times because it just slides down the walls very quickly into the tub and left it for about 8 hours. Went in and anticipated that this was going to be the answer to my dreams and lo and behold, NADA. Nothing. No change whatsoever. My tub was every bit as stained as it was before I sprayed one drop. This stuff is simply junk, does not work on fiberglass tub/showers, and was a complete and total waste of my money. I"m really angry about this purchase and the total pack of lies I was fed in the description. Believe these one star reviews. WE are speaking the truth.

I bought this in an attempt to clean my fiberglass shower that had years of caked on grime. It was one of many cleaners and DIY methods I had tried over the years and honestly, I thought it was just going to be another vain attempt at getting the shower clean, but hope springs eternal, right? All I can say is, don't bother with anything else. This miraculously took off the years of soap scum and grime that I had been trying for years to clean up. I treated it once and scrubbed. I thought I saw some of the grime coming off, so I treated it again and scrubbed. Surprisingly, even more scum came off, so I treated it a third time and now my shower is sparkling clean!!! I can't tell you how happy I am to have finally found a cleaner that really works!

Worked great!