FG-2 - the one specially formulated eco-friendly marine fiberglass cleaner you need. Safely, quickly and easily clean marine fiberglass surfaces. Green Blaster Fiberglass Stain Remover is ideal for removing oil, rust, exhaust, waterline and transom stains on boats - excellent also for cleaning fiberglass indoor or outdoor furniture. FG-2 is non-abrasive so it is safe to use on white painted surfaces as well as gel-coat fiberglass. FG-2 requires no sanding or compounding, just apply with a brush, cloth or sponge, wait a few minutes to allow it to work on the stains, then rinse eco-friendly FG-2 off with water or wipe with a clean cloth to leave fiberglass and gel-coat surfaces sparkling clean.