I bought a plastic container at the dollar store just to soak parts in. Soak your tools for a couple hours and check them. That might be all it takes.

I've found that dipping a piece of steel wool in the EvapoRust really works well on lightly rusted parts that you don't want to dip. I also use it in my parts tumbler along with the green pyramids.

Harbor Frieght sells it. I've also seen it at a local farm implement store.