If your dishwasher has one of those silverware holders that you can close to make a little cage, toss them in there. If not, use the washing machine. The toilet may also be a good idea if you put a strainer or something over the hole to stop the games from being flushed away. And if none of those work, just throw the games out and buy new ones which are sure to be clean.
(I'm giving you blatantly dumb answers because you already posted 3 completely reasonable cleaning methods, making asking the question completely pointless.)
sirtonne posted... This topic is so stupid I had to slap my wife.
The best way is to ***not buy used carts at Gamestop to begin with***. Stickers on the back? Really? No stickers= no black smudges.
What? Gamestops here barely sell used games without a box anymore.
Really? That's weird. Ours are all going to the "toss the box, slap on a sticker and shove it in the locked case" method. They started doing that within the past year or so. The shelf display for DS/3DS is almost nonexistent here. In fact, I don't think the one location has ANY used DS/3DS games in cases any more.
~" A chat with you, and somehow death loses its sting."~