Several dealers in Grand Rapids are now selling electronic devices to prevent rust on your vehicle. Before purchasing, please research this product on the web. I have vendors offering these to me but I've read too many negative reviews. The most common thing I read in my research was that all agree that the rustproof product that is sprayed on works. We've been in business for over 19 years and I can tell you that it's effective against the salt and brine that the State of Michigan uses on it's roads and overpasses.