Currently unavailable.
We don't know when or if this item will be back in stock.

MaryKate On and Off - Hull and Bottom 1 Gallon Cleaner

4.5 out of 5 stars 41 customer reviews

Currently unavailable.
We don't know when or if this item will be back in stock.
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  • Works instantly to remove the toughest waterline stains, algae stains, rust & gas exhaust stains
  • Use on fiberglass only
  • Will not harm gel coat
  • Non-flammable
  • This item is not for sale in Catalina Island
Currently unavailable. We don't know when or if this item will be back in stock.

Product description

The best selling, most used hull and bottom cleaner on the market today, Marykate On & Off instantly removes waterline stains, algae stains, rust, and exhaust stains. The advanced, industrial strength formula softens barnacle rings and zebra mussels for easy removal. Safe for use on fiberglass, just brush it on and rinse it off! 1 gallon.


Product details

  • Product Dimensions: 13 x 13 x 13 inches ; 13 pounds
  • Shipping Weight: 9.3 pounds
  • Domestic Shipping: Item can be shipped within U.S.
  • International Shipping: This item is not eligible for international shipping. Learn More
  • ASIN: B0000AXNNI
  • Item model number: MK20128
  • Average Customer Review: 4.5 out of 5 stars  See all reviews (41 customer reviews)
  • Amazon Best Sellers Rank: #396,794 in Sports & Outdoors (See Top 100 in Sports & Outdoors)

Customer Questions & Answers

Customer Reviews

Top Customer Reviews

on November 5, 2011
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on November 10, 2015
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on May 27, 2015
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on March 6, 2017
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on November 7, 2011
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on October 6, 2013
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on October 23, 2012
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on July 5, 2016
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