pdm workgroup organization

we have been using pdm workgroups fro several years now.  using pdm went through a learning curve on the best method to organize the projects, tracking models, drawings, comman parts, etc.  there vault has acculmulated lots of junkwhich needs to be cleaned out.  we would like to avoid looking at each model/drawing to determine if it should stay in the vault.  is there a method to streamline this process?

thanks

SolidworksWorkgroup Pdm