In a message dated 6/21/2005 4:36:53 PM Eastern Standard Time, helenware@comcast.net writes: thank you, I have an optical mouse and it h as no ball or the like- I can't see how I can take it apart! Helen Helen- I don't know either because I don't have that type of mouse--that would eliminate the possibility of dirt in the ball part (the part that slides) of the mouse but I would think the "clicker" could still be sticking. Joan