We have had our Ultra Frame for 2 seasons, both of which we used the saltwater generator. We never rinse the frame after use. This year after taking it down we did find some minor rust spots on the frame, mainly where the paint was scratched where the pieces meet from putting it together/taking apart. Over the winter I want to clean all of the pieces really well, and then spray them with the Rustoleum Rust Inhibitor spray. It's certainly not reason enough for us to stop using the saltwater system. I love that thing!