Question for owners of forged irons?

I brought my MP32's second hand and they had some rust on them.

I just gave them a blast with some AC-90 (Similar to WD-40, but better) and went to work with a firm nylon brush.

Once a month or so I'l give them a blast and a good scrub in the same way just to keep them in good condition.

If the rust is pretty bad, I'd suggest a car polish, maybe something like Autosol. You don't want anything too abrasive as it will affect the finish of the clubs.