Could someone please help me on this. I have a Logitech Optical Mouse that I got for my birthday in March 2001. Over time it got dirty. I just got a new one about a week ago and I want to know how to clean it so it doesn't get dirty over time like my old one did. How often should I clean my mice? I also would like to know how to clean a keyboard and how often it should be done. Even though my old mouse got dirty, it still was working, but I assume a mouse and keyboard being dirty still is not healthy for them so that's why I should start learning how to clean them. I am looking for a safe and effective method to clean them without danger of breaking the mice and keyboards I have. Help greatly appreciated.