Marine 31 Mildew Stain Remover

A friend told me of this product to get rid of mold and mildew stains on vinyl. I have a car that has been in a garage for over 11 years. This product cleaned the seats even down to the creases. It is one of the best products I have purchased in a long time. It is great!!

Literally made my 2006 all white boat interior look new! Almost no scrubbing needed. sprayed it till it was wet, let it sit for 5 minutes, and I have ZERO spots left of black. pure white again!! My seats were covered with black and I was about to have them re-covered (I have a few holes in the seats so I'm headed towards that anyway but this still might delay that by a few years. even my wife commented that the boat seats look new and asked it I had spent some money that we had not talked about 😂

Good stuff, cleans that dirty boat right up. Moving forward i recommend wearing gloves or your hands will have a bleach like smell

I had some mildew stains on the windshield cover from my motorhome, so based on other reviews, I tried this. In short, it worked perfectly. I sprayed it on the cover fairly heavily and let it sit for about 30 minutes, until all the spray was dry. Then I hosed it off to get rid of the excess cleaner (it has a strong chlorine smell, so I suspect it would damage the vinyl if left on without rinsing - that’s an opinion, not a fact). When I was finished, the cover looked as good as new. One heads up for future buyers. I used almost the entire bottle on my windshield cover. If you have a lot of things to clean, you may well need multiple bottles. But, it’s easy to use, no scrubbing, and it works. At least it did for me.

This product makes surface stains disappear and deeper mildew stains do lighten up. It contains sodium hypochlorite which is a strong bleach, so be careful around stitching, which can be damaged over time.

AMAZING STUFF!!! I couldn't believe how FAST and how WELL this stuff works! EASY to use -- spray and ignore! The only caveat is that it has a strong "bleach smell", so I just turn on the exhaust fan in the bathroom when I use it -- the smell is CLEAN, and that is EXACTLY what it does! When we cleaned out my brother's house after his passing, I "inherited" his garden angels; they were black with mold, but after spraying them with this, and "walking away", they were back to being white! I also sprayed the various bottles in the shower, and the mold, that nothing else could challenge, was GONE! I HEARTILY RECOMMEND THIS MAGIC SPRAY!

Have used this mold/mildew killer several times. It’s the “BOMB”. Spray it on the problem area and let it penetrate for 15 minutes (directions on bottle say at least 5 minutes). I find that the longer soak makes the nasty stuff die and disappear. Then just rinse and dry the treated area. Highly recommended.

I've used several of these marine vinyl cleaners. This is by far the best. I had some stains on a boat seat that an SB product and a motorized brush could not remove. With Marine 21, it was gone after barely wiping with a microfiber cloth. Highly impressed, I'm telling all my boating friends.