could this be used on a canvas boat cover?

Try it on a small section first to see what happens. I got some of it on my shorts and it bleached them. It is powerful stuff.

Is this safe to use on colored vinyl

I used it on white and blue vinyl and it worked very well.

Is this only a whitener or does it also disinfect and get rid of the actual mildew?

This is the best product I have found to get rid of mildew on my boat seats and other area. I would suggest if it kills mildew it would also disinfect as well.

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Marine 31 Mildew Stain Remover Gel | Thick Gel Formula for Marine, Boat, Home & Patio | Removes Mildew & Stains from Bathrooms & Showers | Effective Cleaner | M31-375 | 20oz

Marine 31 Mildew Stain Remover Gel | Thick Gel Formula for Marine, Boat, Home & Patio | Removes Mildew & Stains from Bathrooms & Showers | Effective Cleaner | M31-375 | 20oz

Product ID: 141627828

Details

Brand
Marine 31
Item Form
Gel
Material Feature
Unscented
Scent
Unscented
Specific Uses For Product
Bathtub Deck

🧴Thick gel for targeted stain removal

⏱️Fast-acting 1-3 min formula

🛥️Safe on marine vinyl & fiberglass

$63.46

Duties & taxes included

In stock

Sold byAmazon USADelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

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Description

🛥️ Clean Like a Pro, Shine Like You Own the Dock!

MARINE GRADE SAFE - Protects delicate vinyl seats and fiberglass without discoloration or damage.
THICK GEL FORMULA - Clings to vertical surfaces for deep, effective mildew removal.
RAPID STAIN ERASER - Works in just minutes to restore surfaces without scrubbing fatigue.
VERSATILE POWER CLEANER - Perfect for boats, patios, bathrooms, and more—one gel to rule them all.
UNSCENTED CONCENTRATED - No overpowering smells, just pure cleaning muscle in every drop.

Marine 31 Mildew Stain Remover Gel is a concentrated, thick gel cleaner designed for fast and safe removal of mildew and stains on marine surfaces, vinyl, fiberglass, and household areas like bathrooms and patios. Its quick 1-3 minute action and unscented formula make it ideal for professionals and enthusiasts seeking effective, no-fuss cleaning without damaging delicate materials.

Specifications

ASIN	B07V47SPF8
Best Sellers Rank	#79,703 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #161 in Boat Cleaners #596 in Boat Hardware
Brand Name	Marine 31
Contains Liquid Contents?	Yes
Customer Reviews	4.6 4.6 out of 5 stars (601)
Included Components	(1) Marine 31 Mildew Stain Remover Gel 20 oz
Item Form	Gel
Item Type Name	Mildew Stain Remover Gel
Item Volume	20 Fluid Ounces
Manufacturer	Marine 31
Material Features	Unscented
Model Number	M31-375
Number of Items	1
Part Number	M31-375
Scent	Unscented
Size	20 Fl Oz (Pack of 1)
Special Features	Concentrated
Specific Uses For Product	Bathtub, Deck, Shower, Sink, Tile
Surface Recommendation	Fiberglass
UPC	082045630480
Unit Count	20 Fluid Ounces
Warranty Description	Standard Marine 31 Warranty

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Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

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How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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TrustScore 4.5 | 7,300+ reviews

Suresh K.

Very impressed with the quality and fast delivery. Will shop here again.

4 days ago

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Excellent communication throughout the order process. Product is perfect.

2 weeks ago

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$63.46

Duties & taxes included

In stock

Sold byAmazon USADelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to USA.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

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The product quality is outstanding. Exactly what I needed for my work.

1 month ago

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Perfect platform for hard-to-find items. Delivery was prompt.

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