Metal Rescue Rust Remover GEL is a cleaner safer and easier rust remover for iron and steel. Unlike other gel-based rust removers Metal Rescue GEL is non-toxic environmentally friendly and contains no harmful or corrosive acids alkalis or solvents. Metal Rescue GEL is your on-the-spot rust remover Its highly-adhesive formula allows for simple and controlled application-GEL clings to metal. GEL must remain moist to remove rust do not allow to dry. For success use Metal Rescues signature plastic wrap method: Keep GEL from Drying-Wrap After Applying.