Over the years, I have come to trust Eastwood products and the latest is the Eastwood Rust Dissolver.
In all likelihood, you have used a rust remover at some time and found it to be a somewhat nasty job. Be careful if that hardware store runny rust remover spills or you may end up repainting something unplanned.
The new Eastwood Rust Dissolver is in a gel form and it is much easier to control and use on vertical surfaces. Eastwood Rust Dissolver will not harm any materials like brass, aluminum, rubber or even vinyl.
A quart of Dissolver is $ 24.99 , a Gallon at $ 49.99
To order; go to eastwood.com or call 1-800-345-1178. Be sure to ask for a free catalog, too.