Marine 31 Mildew Remover
Remove stubborn mildew stains – FAST!
Marine 31 Mildew Remover quickly and safely removes stubborn mildew stains on virtually all marine surfaces, including vinyl seat cushions, rubber fenders, fiberglass, gel coat, canopies, and more! Marine 31 Mildew Remover forgoes volatile cleaners and instead relies on smart chemistry; even severe mildew growth is no match for the incredible cleaning power of Marine 31 Mildew Remover.
Not all marine mildew removes are created equal! Most over-the-counter marine mildew cleaners rely on heavy concentrations of bleach and other volatile chemicals that actually cause more harm than good. Marine 31 Mildew Remover removes stubborn mildew stains without discoloring, dulling, or drying out vinyl surfaces. Best of all, it still retains the powerful cleaning ability to remove mildew stains – FAST!
Use Marine 31 Mildew Remover on:
Directions:
Made in USA
Federal regulations prohibit the shipment of this products by air, UPS 3 Day, UPS 2, or US Mail. This item is shipped by UPS Ground only. Sorry but no APO or FPO addresses.
Marine 31 Mildew Remover quickly and safely removes stubborn mildew stains on virtually all marine surfaces, including vinyl seat cushions, rubber fenders, fiberglass, gel coat, canopies, and more! Marine 31 Mildew Remover forgoes volatile cleaners and instead relies on smart chemistry; even severe mildew growth is no match for the incredible cleaning power of Marine 31 Mildew Remover.
If you’re a boater, chances are you’ve dealt with stubborn mildew stains on vinyl cushions. If you’re reading this product description, chances are you’ve been less than satisfied with the performance of other so-called marine mildew cleaners. Fortunately for you, we’ve compared Marine 31 Mildew Remover against other marine mildew cleaners and have found that it removes mildew stains faster, with less effort. |
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Not all marine mildew removes are created equal! Most over-the-counter marine mildew cleaners rely on heavy concentrations of bleach and other volatile chemicals that actually cause more harm than good. Marine 31 Mildew Remover removes stubborn mildew stains without discoloring, dulling, or drying out vinyl surfaces. Best of all, it still retains the powerful cleaning ability to remove mildew stains – FAST!
Use Marine 31 Mildew Remover on:
- Vinyl cushions and chairs
- Rubber fenders
- Fiberglass
- Gel coat
- Canopies
- Boat tops

- Spray directly onto surface and allow 1-3 minutes for penetration.
- If necessary, agitate surface with a brush or terrycloth towel.
- For stubborn stains, allow cleaner to penetrate for 5 minutes before agitating.
- Thoroughly rinse and dry surface.
- Follow with Marine 31 Mildew Guard to protect treated surfaces.
Made in USA

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Review Summary
5.0
11 Reviews
5
100% (11)
4
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3
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2
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100% Recommend this product (11 of 11 responses)
By Mw
Boston, MA
Miracle 31
September 19, 2018
This stuff is AMAZING. If you have mildew on your boat seats I can not recommend this product enough. I thought I was going to have to buy new cushions. They are like New after using this product and I hardly even had to wipe it to remove the mildew. It just melts away. Wish I had a before picture of the cushions, they were black!
ProsAll you have to do it spray and wait.
ConsDoes contain bleach so wear old clothes
By IanK
Chadds Ford, PA
Awesome results
July 3, 2014
Noticed my pool floats had developed mold/mildew spots from being stored over the winter. Washing with a pressure washer and APC did next to nothing, but after one hit with Marine 31 Mildew Remover I swear the spots disappeared in front of my eyes!! I can't wait to see what this product will do to the moldy boat seats I picked it up in the first place for!!
ProsIt works!!!
ConsI should have bought it sooner
By Rodney
,
Marine 31 Mildew remover
December 4, 2020
Can’t believe how great it works. My boat throw cushion was covered with mildew. Sprayed Marine 31 and let it sit for about 15 minutes and the cushion is snow white.
By Sharon
St Petersburg, Fl
The Best!
May 24, 2020
Fast and easy! Removed mildew stains from vinyl seats that other cleaners couldn't.
By Susan
michigan
excellant
September 4, 2019
Cleaned very mildew boat vinyl. Bleach cleaned top mildew off but left stain. This product took care of deep mildew stains. Bought 3 bottles it worked so good.