Davis Instruments FSR Big Bottle Review

The easiest way to remove a stain! I just put some on a sponge and smear it all over my boat. No need to rub and rub your elbows! In less than 5 minutes the stain was gone and the brilliant white color was back. It takes me 20 minutes to build my 25ft boat.

I have been using FSR stain remover for many years to remove stains from boat hulls in a bay after a long boat dock on the sub Gulf Coast. Works great with minimal effort, just apply and wipe off immediately. It also removes rust stains.

Used on my 2018 295 Everglades and wow within 20 seconds every movement was white as a sheet! In areas I thought were bright white, this wasn't true and made them even brighter. It also works really well with rust around stainless steel as I had 3 bolts that were supposed to be a little lower quality and have a bit of rust around the head! Thumbs up.

I heard from my boat group that this works well. I disagree, that's great! Used it on our new boat for us in 2014 with brown stains on the bottom. They came right away! I've tried other cleaners, Nufinish and Magic Eraser but to no avail. That was incredible. I didn't even have to rub, wipe for wipe. Worth every penny :)

Oh my god that was amazing! There were orange-yellow stains from salt water on my hull. The initial wash with a mild scrub was somewhat successful, but the case still had discoloration. Just wipe off the FSR gel and the white cover will be back in no time. What surprised me the most was the lack of effort or friction. In fact, delete and delete. The skeptical boater has now become a fan. Thanks!

Unbelievable! My sailboat has been in the water all summer on a mooring balloon. I was so worried about the green slime. After taking it out and washing it off, I looked at the brownish-green stains and thought they would never be white again. I applied FSR and in a few moments it was white again. i am so satisfied It takes no time and works like magic. After washing and waxing it looks almost new.

First of all I have to say that I worked at Davis Instruments from 2000 to 2005. I actually forgot Davis had this product. I used it on a shower tray with debris. Despite the ease of use, I did not get the expected result for my money. This product removes maybe 20% of that. This is oxalic acid in gel form. Bar Keepers Friend is a fortified form of oxalic acid and it really worked by removing it completely.

Oh my god this product saved me a ton of money. My fiberglass shower is at least 40 years old and I've tried many products to clean it but I couldn't get the stain off the floor looked dirty and no matter what I used the old suds never came up. It was the last try! The shower looks amazing, so clean it sparkles, soapy suds, hard water and what I thought was crack covering paint was actually just a stain!

My boat has been on the water for 8 weeks. It's usually stored on a trailer or hoist so I started with a nice clean hull. As can be seen from the photographs, the accumulation in water after 8 weeks was significant. I gave it a quick wash before applying to remove the flaking and I still had significant stains that the washing machine failed to remove. I applied the FSR with a sponge, let it work for 2 minutes and then sprayed it on. The buildup usually resolved itself in one application. A…