Like for other people, this product worked on stubborn mildew spots on my boat upholstery that were there after winter storage. Other products wouldn't remove them. Marine 31 did. I found I had to respray some areas, as the spray works SO well that I could see where the spritz went and where it didn't. Also seemed to clean old dirty buildup better than my marine wash product.

It is without a doubt the best mildew remover that I have ever used! I live on a lake and have multi-able boats that stay covered for months at a time. Spray, let sit and wipe. Suborn stains with a lite scrub removes even the toughest. I've found it works on other problem areas such as outdoor chairs, recliners and even buoys. I'm sure as time goes on I'll find others. I highly recommend this to anyone that have bought "other mildew removers" only to find that they just don't work. Try it once and you will be telling everyone you know how good this product works!

This product really works. I've tried a few other marine vinyl cleaners that wouldn't touch the mold and mildew. I was amazed when I sprayed Marine 31 on my boat seats and just wiped away all the stains. My seats look almost new now.

Man this stuff works, I had some spots on my bimini and rear seats when I uncovered this year, sprayed it on and let it sit, spots were gone. I had some tough mold stains in my bathroom that soft scrub or straight bleach would not even remove, sprayed Marine 31 on it, let it set and in a minute or 2 they were gone. Well satisfied.

Marine 31 was THE solution for removing my boat's seats mildew stains. I am now going to order their mildew guard product.

Product works well on mold. You have to be careful when using it. We ruined two pairs of jeans and one shirt due to bleach that's in the spray. There should be a big warning note to wear old clothing when using the product.

Yes. It worked great. Our pontoon boat that we purchased used with some mildew formation looks like new after using this awesome product! UTube video was very helpful!

Best product to remove mildew off of boat seats. Strong bleach-like smell but goes away when dried. Recommend using gloves and eye protection.

Our pontoon boat had mildew on the seats this year after it was stored for the winter. I found this product online, read the reviews and decided to try it! My Husband was so happy with how nice our boat seats looked with very little effort & he said you should rename it "Awesome!" We will buy it again!

This stuff is amazing! Magic!

Works great. Easy to use. Recommend using gloves and eye protection.

Best cleaner ever...it definitely works A . I love it and will continue to buy this product.

Finally bought something that actually works just like in the advertising video. My bass boat and pontoon interiors look like new. Considering they are 29 and 31 years old respectfully, it is amazing. The pontoon had a mildew problem starting when it was only 3 months old and I was never able to get it as clean and mildew free as it is now. thanks marine 31!

It's very expensive Bleach water. I will use the bottle when I mix my own .

Hands down the best cleaning product I have ever tried. Spray and watch mildew disappear before your eyes. Buy it. Try it.

Worked fairly well on mildew spots!

Great stuff

Bought this product to remove heavy mildew on canvas. Tried multiple products designed to remove mildew without success. This product amazed me immediately! Completely removed mildew staining and didn't alter color of the material I was working on. Strong odor when applying but after 24 hours the odor is gone along with the musty mildew smell and it just smells clean!

Two words----IT WORKS!!!