Degunking and delinting the rollers for the mouse balls was a daily preventive maintainance routine for the Macintosh computer rooms we operated on campus in th

Degunking and delinting the rollers for the mouse balls was a daily preventive maintainance routine for the Macintosh computer rooms we operated on campus in the 80's. The MS-Dos PC rooms had no mice yet. There we had to turn off the machines in the morning as praksters loved to set the whole room looping explicit ascii imagery on the greenscreens over night.