Actually, a Mighty Mouse can get more gunked up than the turn-it-upside-down-and-roll-it technique can fix. I've taken two apart and found the little plastic rollers, that the pea abuts, get fuzz and stuff wound around them just like the good old roller-ball mice used to.
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Here's a pretty good YouTube video with instructions:
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http://www.youtube.com/watch?v=Jet7488UoSE
I reassembled the mice, using little dabs of glue, but didn't bother reinstalling the plastic ring; hopefully that'll make it easier to take them apart the next time.
Actually, a Mighty Mouse can get more gunked up than the turn-it-upside-down-and-roll-it technique can fix. I've taken two apart and found the little plastic rollers, that the pea abuts, get fuzz and stuff wound around them just like the good old roller-ball mice used to.
I reassembled the mice, using little dabs of glue, but didn't bother reinstalling the plastic ring; hopefully that'll make it easier to take them apart the next time.