Instructions
1)Disconnect mouse from PC and then turn it upside down.
2)See bottom of mouse and find circular plastic which has hole where rubber ball is placed. Hold the mouse and turn circular plastic towards the direction of arrow.
3)Upon taking out cover, see the out rubber ball which rotate plastic wheels under it. Remove ball.
4)Wash circular cover and rubber ball with gentle soap and warm water then let it air dry.
5)See upside down mouse, there are two wheels or rollers that rotate when they come in contact with rubber ball. These wheels always rotate with rubber ball and in process, any dirt or particle that stick to rubber ball as you are rolling it will finally end up getting stuck in these wheels. Get tweezers and try to remove any dirt, hair, lint, etc. from the little plastic wheels.
6)Apply a small rubbing alcohol to cotton swab and clean wheels and inside of mouse. Be cautious not to get any wires or parts of circuit wet as this harm mouse.
7)After ball and cover are dry, accumulate mouse by putting in rubber ball and joining cover.