HOW DO I CLEAN A FLOPPY DRIVE?  (1.4)
-------------------------------------

       Normally you don't need to.  Several companies sell floppy 
  drive cleaning kits that consist of nothing more than a disk and 
  some cleaning fluid for anywhere from five to twenty-five dollars.  
  These are almost as pointless as the CD cleaning kits sold to 
  overenthusiastic CD owners.  I'd only use one of these if I was 
  already experiencing problems that were identifiably linked to the 
  floppy drive rather than individual disks.  Cleaning a floppy drive 
  should not be part of normal maintenance.  When you do need to clean 
  a floppy drive, Apple recommends the 3M floppy drive cleaning kit.

       If you have a vacuum cleaner designed for electronic equipment, 
  you can always run it across the floppy slit, but even that is 
  rarely necessary.  Or you can disassemble the Mac and use a can of 
  compressed air to blow the dust out of the floppy drive.  Don't do 
  this without disassembling the Mac first though since otherwise 
  you'll just blow dust deeper inside your computer.  And even when 
  the Mac is taken apart, be careful to blow the air AWAY from the 
  motor.  If you blow air into the drive motor, you'll forcing dust 
  into it and make the drive more likely to fail.