Reasoning

A dirty mouse can cause the mouse to be difficult to move as well as strange mouse movement.

Procedure

To clean the rollers you must first remove the bottom cover of the
mouse. To do this examine the bottom of the mouse to see which direction the
mouse cover should be rotated. As you can see on the diagram to the left the picture illustrates that the mouse cover must be moved counter clockwise. Place two fingers on the mouse cover and push the direction of the arrows.

Once the cover has rotated about an inch rotate the mouse into its normal position covering the bottom of the mouse with one hand and the bottom should fall off including the mouse ball. If this does not occur attempt to shake the mouse gently.

Once the bottom cover and the ball are removed you should be able to see three rollers located within the mouse. Use your finger and or finger nail and move in a horizontal direction of the rollers. Usually there will be a small line of hair and or dirt in the middle of the roller, remove this dirt and or hair as much as possible.

Once you have removed as much dirt and hair as possible place the ball back within the mouse and place the cover back on.

If the mouse still appears to be having the same issue repeat the above process, if after several attempts the mouse is still having the same issue it could be a possibility your mouse may have a hardware issue at which time it would be recommended to replace your mouse and you should submit a help ticket.