Hi, Is there any substance out there which will entirely neutralize rust and effectively kill it so it cannot continue to do any damage beneath thesurface? I'm talking here specifically about exterior steel body panels. Take a wing for the sake of argument. Say there is active corrosion in one part of this wing. Say we use something physical like a grinderette to remove all but the pitted areas. We need to fill the damage in with P38 or whatever, but if we don't completely kill the rust in those pockets it will eventually break through to the surface again. Is there any chemical product on the market that renders the remaining rust as harmless as if we were filling and repainting on top of 100% bright metal? Thanks!