This has been my experience, too, The "before" and "after" pictures look dramatic, but within a few years of normal use, you're pretty much back where you started (at least in my case, where I live in a relatively damp climate and store my bikes in a n unheated and non-climate-controlled shed). Maybe regularly wiping down the frame with Boeshield or some such would help, but I've never tried that. Waxing doesn't seem to prevent rust from recurring, at least in my experience. Bottom line, I doubt that I'll ever go to the effort of dipping another frame, either with OA--which I don't like for other reasons--or Evaporust, which I do like and continue to use for derusting components.