Caulk & Neoprene Rubber Stain Remover Gel image 0
Caulk & Neoprene Rubber Stain Remover Gel image 2
Caulk & Neoprene Rubber Stain Remover Gel image 1

Caulk and Neoprene Mold Stain Remover

Regular price$15.00
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4 Fl oz
  • Free worldwide shipping
  • Low stock - 5 items left
  • Backordered, shipping soon

Deep Stain Remover Gel - Eco-Friendly & Powerful

Tired of stubborn subsurface stains ruining your boat's pristine look? Our Deep Stain Remover Gel is a powerful, non-chlorine, and eco-friendly solution designed to safely eliminate tough stains caused by marine organisms, bio-fouling, food, and more.

This isn't just another surface cleaner. Our deep-penetrating gel formula, powered by EPA Safer Choice ingredients, specifically targets and converts inorganic and organic residue stains that even harsh cleaners like muriatic acid leave behind. Watch it work magic on light gelcoat or painted hulls, and even penetrate light-colored stone surfaces to remove stains from iron in water, wine, and blood.

Why You Need It:

  • Deep Penetrating Power: Tackles stains beneath the surface that other cleaners miss.
  • Non-Chlorine Formula: Safe for you, your boat, and the environment.
  • Eco-Friendly: Phosphate and sulfate-free ingredients break down into a wipeable, H2O residue.
  • Marine Safe: Non-harmful to sea creatures when used above the waterline.
  • Versatile Use: Safe for fiberglass, marine paints, quartz, plastic, marble, granite, canvas, and Stamoid covers/awnings.
  • Restores Yellowed Plastics: Apply, wrap, and leave in the sun for 6 hours to reverse yellowing!

How to Achieve Perfection:

  1. Prep: Put on gloves.
  2. Apply: Use the supplied applicator tip to spread a 2-3mm layer of gel onto the stained area.
  3. Cover: Place a clear film patch over the gel and gently press down to spread it evenly. For vertical surfaces, secure the patch with blue tape at the top and bottom.
  4. Wait: Let the gel work its magic for 1-12 hours. Deeper, more stubborn stains may require more time. No scrubbing is needed – chemistry and time will do the work for you!
  5. Reveal: Once the stain is gone, wipe clean with a neutral APC cleaner and a microfiber cloth, like our Sea Clear spray cleaner.

Note: Not for use on Hypalon, vinyl, teak, or synthetic teak.

Caution: All cleaning chemicals are a skin and eye irritant depending on individual biology and physiology. See Safety Data Sheets for more information or read our in depth instructions on packaging for further guidance.

Disclaimer: Not following the Instructions may lead to amateur looking results. Our products are each designed to be 'Direct2Sea' or 'No Rinse' meaning they are safe to use for both marine surfaces and overboard rinse once they have neutralized as per their instructions

Warning: All chemicals pose a potential hazard to skin, eyes or lungs or the sea life depending on the individual biology and genetics of the life form it comes into contact with. Please follow safety precautions with each product to ensure your are a happy Simple Sailor and free from complaints but full of joy...

Although we'd love to use a ship to send you our teak cleaner its easier to send by van, truck, rail or air in the U.S. Shipping is free for orders over $100 and $15 for all orders under $100 with standard expedited 3 day shipping. Note: for orders over $500 we charge shipping but offer a 10% discount on all goods ordered.

Returns are allowed but you better have a good reason. We are a small business that doesn't do half measures because you used it and then had no further need. We know our products cannot cause damage so we will need photo and video evidence unless the shipping department destroyed your goods before they arrived. In which case we have insurance.

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Don't take our word for it

★★★★★

CHEMISTRY WIZARDS

This product is the business, it works exactly as described. It is cost effective, reduces deck cleaning time, reduces the space required to store it and leaves the deck super clean ready for the brightener without the fallout trashing everything around the teak.

Chief Officer James Wiig, MY Moatize

August 2024

★★★★★

A GAME CHANGER

This chisel is soooo much better than using razor blades. We saved dozens of hours. It is also way better on the teak as the way it is designed ensures it doesn't catch or gouge. It's very satisfying to use and made what is usually an arduous task actually oddly satisfying. You can see in the photo that the strips of the mastic are very long (feet vs the inches you get with blades).

John Marshall, 42ft Sail Boat

April 2025

★★★★★

HOW DO THEY DO IT

I could not recommend this product more highly. Comes in very convenient 1lb bags that each bag makes one large bucket of solution when mixed with water.

Customer service is great, and training was provided at request.

Ross Hamilton, MY Gigi

November 2024

★★★★★

JUST WORKS, THAT SIMPLE!

Effective and easy. Just follow the brilliant directions shown on the bottle and apply. Very happy with this product - definitely worth a try!

Stuart Smith Chief Officer, Westport 50m

September 2024

★★★★★

WIZARDS WHO ARE REAL YACHTIES!

Every product form Simple Sailor Marine is simply better then its competitor but this stuff is in a league of its own. Applied to the bridge windows and I feel like I forget we have or ever need the wipers during rain or heavy seas

Trevor Burgess, Chief Officer Helios 2

April 2025

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