I recently acquired a wireless Apple Mighty Mouse for work. It replaced my trusted wired Logitech that i’d used to the point of button failure. I was skeptical at first but — the Bluetooth works amazingly, the mouse right/left clicking mechanism is perfect and the scroll wheel works well enough for my tastes.

Someone had asked me a couple weeks ago about how to clean one. At first glance there’s no way to open the little sucker. The little ball you scroll with has no obvious way of being removed. Turns out the methods is anything but simple — but at least it’s doable.

This site breaks it down: http://web.mac.com/karelgil/iWeb/MacWebSite/MightyMEng.html …
Good luck!