Davis Fiberglass Stain Remover 16oz The Davis Fiberglass Stain Remover is a unique stain absorbing gel that is ideal for removing oil, rust, exhaust, waterline and transom stains. This stain remover can be used anywhere fiberglass stains may occur - show stalls, furniture, etc. Can also be used for removing road soil from trailered boats and recreational vehicles. Davis Fiberglass Stain Remover is non-abrasive, so its safe to use on white painted surfaces as well as on gel-coat. Davis Fiberglass