Need help with logic re icitem

SUGGESTED

I'm trying to create a query for a client to find items that haven't been used since a certain date (ICILOC.LASTUSED).  They don't want to see items that were created recently and haven't been used yet (LASTUSED=0), but still show items that were created a few years ago and never used. The intent is to find items that are still active, but probably should not be.  There's no "Create Date" in ICITEM.  The closest i can find is the AUDTDATE of ICUNIT, because that doesn't usually change over time but there must be a more accurate way.  What am I missing?