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I recently bought a gallon of the Biokleen black streak remover because after 10 years of owning an RV I have had little luck with black streak removers bought at local RV dealers. If the black streaks have been left on for awhile they are very difficult if not impossible to remove. I used the Biokleen remover and the hardened streaks came right off, years of grime came off, it brightened the yellow trim around my door and it removed mold around rubber trim on access doors and windows by lightly scrubbing with a copper brush. My trailer looked new after 10 years of use. I did not have to scrub hard, just used a soft brush and wiped it over areas, Let it set for awhile and then rinsed off with water. Then washed with an RV type wash using a seperate RV brush. I would recommenf anyone to give this product a try. I was very satisfied with it.
i have tried a lot of different products and none of them would do the job like the bio-kleen does. easy on and easy off. great product!
Works well on camper also have used to clean the rims on my cars
Great Product, I cleaned my 24' enclosed car trailer and it Really Works Great ! I followed the directions and it had been 2 years since last cleaning and the product I used was different and did not clean as easy as Bio-Klean I would highly recommend to anyone 5 stars !
<p>Works great! Spray on, let it set 20 seconds, wipe off. Couldn't be easier. I used on white gutters and facia. No other product I found could take off the years of oak leaf stains and other black streaks. Seems to work better when it's warmer than on a cold damp day.</p>