$6.95 Flat Rate Shipping!
Harbor Safe Marine Care Products
Waxes, Cleaners & Polishes

Marine 31 Mildew Remover

<font color=red>Marine 31 Mildew Remover</font>
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.

Marine 31 Mildew Remover is the best boat mildew cleaner available!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.

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
Marine 31 Mildew Remover works wonders for household cleaning as well! Use this professional strength formula to clean tile, grout, showers, bathtubs, counters, and sinks.

Marine 31 Mildew Remover works FAST!Directions:
  1. Spray directly onto surface and allow 1-3 minutes for penetration.
  2. If necessary, agitate surface with a brush or terrycloth towel.
  3. For stubborn stains, allow cleaner to penetrate for 5 minutes before agitating.
  4. Thoroughly rinse and dry surface.
  5. Follow with Marine 31 Mildew Guard to protect treated surfaces.
20 oz.

Made in USA

Marine 31 products are harbor safe and eco friendly!

Marine 31 Mildew Remover
Item #: M31-370
Our Price: $19.99
Availability: Usually ships the same business day
Our Price:$39.48Sale Price:$24.99
Our Price:$73.94Sale Price:$54.99
Our Price:$67.99Sale Price:$57.99

You May Also Be Interested In These ...

Product Reviews

Review Summary
14 Reviews
93% (13)
0% (0)
0% (0)
0% (0)
7% (1)
93% Recommend this product (13 of 14 responses)
Pittsburgh, PA
Magic in a bottle
We pulled our boat out of storage last week and all the vinyl was covered in mold and mildew. After 2 hours of scrubbing with mold and mildew remover and then trying a magic eraser - I was very upset thinking we would have to have the cushions recovered. The mildew had stained all the cushions and I couldn't get them to come off. I found this product online and figured I would try it before searching for someone to recover our seats. This stuff is MAGIC! I didn't even have to scrub the spots. It took awhile for the stains to disappear - but after about 15 minutes - every single spot was GONE! I will buy this product every year - and I am going to try the mildew preventer before we put the boat away at the end of the summer. HIGHLY recommend this product!!
Lillington NC
Marine 31 Mildew Remover
Absolute wonderful product. For health reason, boat sat for two years in North Carolina's humid, moist weather. Was covered with canvas boat cover for 1 year. Last year sat out in elements uncovered. In effort to clean, I researched internet and decided to test four methods of removing mildew: 1) Marine 31; 2) 3M mildew remover; 3) comet spray gel (vinyl only); and 4) magic eraser. Applied all 4 products to boat platform, left for 5 to 10 minutes. Marine 31 results were unbelievable. Person that was helping me could not believe the difference in the results as compared to the others. Family and Friends that have visited, I take them out to see the boat. Also boat owners, they understand the effort and frustration in trying to removed mildew/mold. Needless to say, they have ordered the Marine 31 to clean their pontoon. The mildew//mold on platform was heavier, darker, and thicker than what is shown in the cushion pictures below. It was just the only items I didn't get cleaned before I ran out of Marine 31 and have reordered. A picture is included to show how great the platform looks now. Like New. It was only when I was reordering to complete the project (cushions shown) that I decided I had to write the review. So wish I had a before and after on platform. Writing reviews is out of character for me, BUT I had to let others know. I have invested too much time in previously cleaning our boat and by no mean got the results obtain with Marine 31. The Marine 31 actually removed the gray spots left from previous cleanings where mildew stain could not be removed. The boat is a Renken (oldie but goodie) with lots of wonderful memories. My excitement from using the Marine 31 Mildew Remover has given me such confidence in this Brand that I will be ordering their oxidation products.
ProsQuick, efficient, and does the job. Spray on, leave 5 to 10 minutes, wipe off Cleans much older (gray) mildew stains that were left when previously clean the boat (3 years ago)
Hard to get out & mildew came back
We had to scrub for hours to get this red mildew stain out of our vinyl in the boat. We actually went as far as to use a power sander with the cleaner, which finally got the stains out. Even though this cleaner states it does not contain bleach, when we called up customer service about it we were specifically told to keep the cleaner off the floor and away from stitching in the seats as it would remove the color. The clothes we were wearing had large color distortions on them after done working. It also has a strong bleach-like smell. Unfortunately, the mildew came back within a few weeks -- even after using protectant. Will not be using again as it doesn't work as claimed.
Pros*Great customer service
Cons*Smells awful *Removes color from everything not specifically stated on bottle *Mildew came back *Didn't work as easy as stated on bottle - lots of scrubbing & power tools needed to be used
Miami, Fl
It works like nothing else.
I started looking for replacement seat cushions for my 2006 Yamaha jet boat because I just couldn't get the mold stains out. The boat is well taken care of but the seat cushions were not as nice as the boat and nothing could get the stains out. I researched mold/mildew removers and found Marine 31 videos and I figured I'd throw 20 bucks into the wind because nothing else was working and this stuff looked amazing. It is amazing, it got the mold stains out, I couldn't believe it. I was so happy I called my brother and told him about it, he then ordered some and was also amazed how good (great) it works... thanks guys (Marine 31) I love it
Crystal Beach FL.
marine 31 mold remover
Received this yeasterday which I ordered after seeing a YouTube video. Did not really think it was going to do what it said but tried anyway. My boat is a 2006. Black stuff all over the seats. I live in Florida. They now look like new with just a spray....wait 2-3 min and wipe. Best thing ever
ConsOld shorts and shirt required
, palm bay florida
saved me a grand!
my vinyl was so gross, i was considering having it done over, I was bumming because I would have lost the OEM Mako imprints in the captains chair and the lounge seat. I have tried everything including straight bleach ( i know thats bad but I was ready to re do the vinyl anyway). I sprayed this on and did it take a couple of treatments, yes, but I saw immediate results, so I wasn't worried about the extra treatments. Anyway my vinyl looks brand new, I have always been sold on 3M products, i am about to put in order for more of the product now. thanks jimmydkid
Estero Florida
If this review had 100 stars I would have given it that! I have tried every cleaner, every concoction, and nothing even comes remotely close to Marine 31 mold and mildew remover! Look at the photos below.
ProsSpray it on, wait 3 to 5 minutes, wipe it down, follow with the good rinse. For really heavy stains spray it on and use a brush after 3 to 5 minutes and you will not believe the results! The entire boat interior looked like the first photo. I wish I could’ve posted more photos because this product is amazing, truly amazing!
ConsThere isn’t any! Well, maybe one, I should’ve bought a gallon of this stuff!
Holiday, Fl
Best product ever!
I used many different mold removers. This product, by far, is the best stuff I’ve ever used!!!!! Less than three minutes and the mold was gone!
ProsIt freaking works!!!
Tampa, Florida
Amazing product!
ARE YOU KIDDING! After cleaning mildew off of my viynl boat seat for about an hour and trying every product I had for the boat and house and even after straight bleach the best I could do was to change the stain color from black to grey. I remembered seeing a YouTube video demonstrating the cleaner and figured I'd give this mildew stain one more try. I purchased marine 31 mildew remover and tried it out. I first sprayed it on a small area of the stain and tried to rub it in after about 30 seconds. That worked a little better than my previous efforts si I decided to listen to the instructions and let it sit for 3 minutes. When I returned to the seat the stain had almost disappeared. I rubbed it with a towel and every last bit of the stain was gone and my boat seat looked as good as new. I was absolutely amazed.
ProsThe product worked exactly as advertised.
ConsA bit pricey with shipping.
Thunder Bay, Ontario, Canada
Marine 31 Mildew Remover used on Pontoon Upholstery
I was skeptical as I have tried many different cleaners and lots of elbow grease with very poor results. This stuff is amazing!!! Sprayed it on and waited 3 minutes and wiped it off. You could see it lifting the old mildew stains right before your eyes. No scrubbing needed....this stuff is amazing, It took the whole bottle to clean a 24 ft pontoon boat so now I'm ordering a gal jug to try on my grout in the bathroom...will update once completed. Don't waste your time and money on anything else...this product works!
Statesville Nc
Wow this stuff is like magic.
ConsQuote from another user. Wish I would have bought a gallon.
I actually thought I was in a commercial
Every year I've struggled cleaning my boats vinyl, and removing mildew and mold. I've probably tried twenty different products and I did have success with a few with multiple attempts and a lot of elbow grease. This winter I stored my boat with a vinyl tarp over it for a while, while having my other cover repaired. What a mistake. I came back to find every inch of the boats vinyl covered in mildew. Did a little research, and ordered a bottle of Marine 31. I tried Marine 31 side by side to a product I had used for years, and literally thought I was watching a commercial. After 2-3 minutes, the mildew just disappeared. A few of the worst areas I scrubbed lightly with a microfiber towel. I was able to clean the entire boat in 30 minutes, and the vinyl looked new.
Prosworks like a dream.
ConsCan't buy locally.....
Excellent Product
I clean yachts for a living so I have tried numerous products and have come across several different types of mildew stains. This product does the job amazingly! Simply spraying it on and leaving it and you can watch the mildew disappear. For harder stains I let it sit for a few minutes and then use a buffer on it. Haven't had mildew that doesn't come off with this product yet.
Tampa, FL
Best boat mildew remover PERIOD!!!!
I've tried every mildew remover available and none of them have worked as well as Marine 31 - not even straight up BLEACH! John wasn't kidding on TV when he said Marine 31 is the best stuff to use to clean your boat. You pay a little more but you get a lot better product.
ProsDestroys mildew in seconds. Doesn't smell too bad.
ConsWish I bought a gallon of it!