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Most applications to remove black streaks from RVs and boats require a full strength application. It is recommended to dilute per application on sensitive or heavily oxidized finishes. Test sensitive paints and finishes on a small area first. Bio-Kleen Black Streak Remover can be used on many other applications than just removing black streaks such as multi-purpose cleaning and degreasing.

  • Light Duty 2-4 oz. per 1 gallon of water
  • Medium Duty 6-16 oz. per 1 gallon of water
  • Heavy Duty 32-64 oz. per 1 gallon of water
  • For severe degreasing dilute accordingly

DIRECTIONS: To remove black streaks from RV, trailer or boats spray product onto a dry, clean cloth or towel wipe surface clean. You may also spray product onto a clean, dry wash brush. Start from the bottom and work your way up, in sections, adding more product as needed. Then wash with Super Suds and rinse from the top down.

See the Videos Tab for further demonstrations.

Test older surfaces, chalked and sensitive paints and finishes on a small, inconspicuous area first. It is recommended to dilute per application on sensitive or heavily oxidized finishes.


Overall Customer Rating of 71 Reviews:
Lake Ozark, MO

Awesome

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I tried to pressure wash dead bugs and bug excrement off our boat and it all seemed like it was “welded” on the aluminum and fiberglass of our new Bennington G25 pontoon. We live at Lake Of the Ozarks where spiders are notorious. I sprayed a light coat of the cleaner on, waited a few min and rubbed it down with the BioKleen boat brush and rinsed it off. Made our pontoon gleam like new.

Black Streak Remover

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Pros:
  • Quick and easy to apply
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  • None
This is the only product that actually removes black stains from gutters. I have at least a dozen different products in my garage that failed to do the job.

NJ

Black Streaks

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Pros:
  • works great
Cons:
  • none
The Biokleen Black Streak Remover works great. Nothing else would take the streaks off my trailer.

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It work amazing well

WI

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Gave this 5 stars because it’s the only product I’ve found that can clean black streaks from my enclosed trailer with minimal scrubbing. I follow up with automotive wax and it looks good 3-4 months while stores outside.