Product review (4 stars): Does the job.
Works as advertised, but takes time and patience . Has been on a few months and looks like it is holding up for the moment.
I used navel jelly to dissolve the rust first then put on at least a half dozen coats.
It's like painting fingernails which I don't do, so it is a pain, but it beats a couple hundred to replace the rack.
I would rather just buy a can of paint and spray the whole rack instead of this tedious method, but it does work well once you take the time.