throw a couple of boxes of moth balls in the car and then pull the seats out and pull what ever is covering the floor coat it with por15 and that will seal the metal. nothing likes moth balls. insects and rodents. I have a piece of rural property and in all my structures I have moth balls scattered and I have no problems with insects or rodents. a lot of people don't like the smell, when something is said I simply tell them to hold their breath or don't come in or if you do quit complaining.