IF you need serious scrubbing of rust try copper pads (like Chore Boy)

Found in most every grocery store, CHEAP, in stock, and no shipping charges.

Have used them for many years, still waiting for the first scratch.

When "cleaning" rust speckled items (most often shotguns) I use a copper pad with common 30 weight motor oil. The more expensive gun oil is used AFTER the clean-up is finished.

Must admit that the copper pads do not last too long. They tend to fall apart, breaking into smaller pieces with use. But, these small pieces are great for SCRUBBING the bore of a shotgun barrel. Yes, many of the shotguns coming my way are FILTHY ...

Bekeart