How to go about fixing rocker panel rust

[JeeperCreeper13]

My 1998 TJ has some rust forming on the rocker panel as well as a little around the gas cap. I want to take care of these problematic areas before they really get bad. What is the best way to take care of these little rust areas and what are any good products to kill rust? Thanks very much!

 

[Rollin20z]

Works the best guaranteed !!

Use till no more rust is visible and then fill,prime, paint or install rocker guards.