I totally agree, however I don't have time, equipment and skills to properly remove the rust. As long as I can stop the surface of the rust exposing to salt and water, the corrosion will be slower. This is what I need. I am not going to leave this car to my grandchildren. At the end of the day, it is a car.AZhitman wrote: That "RockerGuard" product is simply rubberized undercoating. All it does is give the rust a dark, permanently moist place to grow. Not a great product choice for the issue you guys have.