A How do I clean and maintain my dock fenders and piling bumpers? Slammer Marine’s dock fenders and piling bumpers are low-maintenance and easy to clean. A quick rinse and wipe with a cloth or deck brus with fresh soapy water is usually enough to remove dirt or salt. The fender cover is engineered to resist staining and fading from UV exposure, so there’s no requirement for special cleaners or seasonal removal. Just rinse and enjoy reliable performance year-round.