Well, you can try to get rid of rust spots by yourself. I recommend you to try new rust fix treatment made by Dupli-Color. It transforms into a black metal protecting coating, which prevents future rust from forming. Sand your vehicle down, and spray the treatment.
Another product to take a look at is Extend rust treatment by Loctite. This one-step rust remover is a synthetic latex resin that also destroys old rust and prevents new rust. It is formulated to be used with body filler and fiberglass.
I've repaired many of tiny rust spots with nail polish.
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