[Bonita Dan]

Any degreaser from an auto parts store will work but may take a couple application or some scrubbing. I would avoid the powerwasher on anything other than the floor and keep it a good distance away from that as well. More than likely any reall bad stains are gonna have to be dealt with a fiberglass cleaner which again means more work. Get yourself some marine spraynine for the seat,worked well for mine with all the algae and such we have down here in the south. Good luck man,your gonna need all ya can get.