Turn your mouse over and find the cover that holds the mouse's rubber ball in place. Words or arrows should show the direction that you can slide or twist the cover to remove it. Take this action using two fingers.

Keep your fingers in place on the cover and turn the mouse until gravity lets the ball and cover fall into your hand. Wipe or blow away any specs of lint as you inspect the cover and ball. You may use the cover as a stand to set the ball down so it doesn't roll away.

Return your attention to the underside of the mouse and notice the three rollers spaced equally apart inside. Use your finger nail to remove the lint build up on the center of each roller.

Scrape in a side-to-side motion across the build-up while slowly turning the roller until all lint is removed. Repeat for all three rollers. Two of the rollers are held in place solidly while the third pushes back on a spring. This will be the hardest one to scrape, but it will come clean with persistance.

The last thing you need to do is put the mouse back together. Shake out any loose lint clumps that may have fallen inside. Wipe off any lint from the ball and put it back in place. Then just return the plastic cover and enjoy!!!