Sounds easy, doesn’t it?  Just throw out things that have gone bad, right? But there really is more involved in keeping a clean refrigerator.

The first step in getting started is to clean the refrigerator.  Get rid of everything where the use by date has expired.  

More: http://www.uticaod.com/blogs/x1363036080/Cooking-Cleaning-and-Maintaining-your-Refrigerator