Fixing the Mighty Mouse Finger Ball

Apple’s Mighty Mouse works reasonably well, but they didn’t provide a way to clean the finger ball.  If the ball stops working it is probably because of dirt.  Sometimes you can fix it by turning off the mouse and pressing down on the ball very hard with your thumb.  Move it forward, backwards, and side to side.  So for this has worked for me in dislodging the internal dirt and getting it working again.