With anticipation, I dipped Q-tip cotton swabs into some bleach and made marks. Nothing. Zilch. I thought maybe it takes time to dissolve the ink, so I let them sit for a bit. Still nothing.
Then I figured if bleach is the tool, why not use a cleaner with bleach. I had Lysol all purpose cleaner with bleach, so I poured some in a little cup and used that. Worked instantly! What fun. Only later did I think about using the spray bottle itself that the cleaner came in to spray onto the pages. Very cool.