That's nothing. We were forced to go through snow through the Rockies and they had salted the roads. Got home and sprayed everything with Salt Terminator, but it still managed to get cancerous cells. I need to get my creeper and get everything underneath POR-15eend. The frame is pretty good, but the house frame could have been sprayed better by the manufacturer. I use POR-15 and then coat everything with automotive undercoating. You can do the same on your bolts.