I have actually let my stamps "saok" in a thin puddle of bleach for up to five minutes to remove black StazOn residue. It also can remove dye ink from the wood if you had a customer accidently drop it into your ink pad upside down. After soaking in the bleach, rinse well with water and condition with mist and scrubber like usual. I actually discovered this by accident because I was stamping with bleach when the phone rang. I had been stamping with one of my favorite stamps that had been quite discolored from so much use. It looked like a brand new stamp!
Another bleaching tip I would like to offer is that you can soak the tip of an old blender pen
(that is no longer useful for it's original purpose) in a small bowl of bleach for about 10 minutes. You can then use it in your AirWorks tool. Another one of my favorite things to do with it is to clear emboss an image on a dark cardstock (like old olive or chocolate chip) then use the bleach blender pen to color over it. Where you clear embossed will remain the original color of the paper, and everything else will bleach out around it.
Any one have any other techniques?
~Nichole