I dont' mean to butt in on this thread, but I have a similar question. My front doors jambs, behind the kick panel have surface rust. I can't get in the with a sandblaster. What can I spray on there to kill it. It was bad in a couple of places that I've already cut out, but I don't want it coming back.
BTW, it was 75 here today and has been for the past 2 weeks or so.