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JB Stik is just like Bondo but doesn't require sanding and is for very small repairs...
u can smooth out the plug with a toothpick and carefully put touch up paint on it
Whatever works the best. I didnt have to do any sanding. Just filled in the hole, let it dry, and applied the touch up paint.
That's extreme but definitely the best way to go about doing it. It's not going to rust because it's plastic (also mentioned). You can just seal it with the aforementioned pastes and use touch up paint given the hole is small enough. It's a simple fix.