I love my Apple Mighty Mouse, but I have had one gripe. The scroll ball’s utility has declined steadily over time. It gets gunked up the more I use it and eventually stops scrolling down. This makes it annoying to use and difficult to read web pages. Recently I found a remedy.
Take a clean white sheet of paper. Set it on a flat surface and roll the scroll ball vigorously on it for about a minute or so. Roll it up and down, side to side, and in circles. The purpose is to dislodge all the gunk and free up the ball.
After this my Mighty Mouse works like new. The scroll ball functions better than it has for the past year. I tried this on a mouse at work and you wouldn’t believe the crap that came out. If you are seeing a decrease in performance then give your mouse a little TLC.
