
I finally have discovered how to get those ugly black blotches off my once white inflatable fenders.
See the attached image of a fender cleaned on the left and as it was on the right
How?
1) First wear only clothing you do not want to wear again
2) Mix 1 cup Baking Soda (cheap at the hardware store) with 1 cup of extra strength Chlorox in a glass or plastic container
3) Using a cheap paint brush, 'paint' this paste liberally on the fender. Leave it somewhere where no one will touch it for at least 8 hours.
4) after 8 hours rinse with lots of water. The results are unbelievable.
I had tried everything from mineral spirits to scrub&shine nothing has worked until this