Surfin' the net for references to "herbicide roundup" (more later), I
took a wrong turn to 'Riddle du Jour", which I will share with BEE-L:
 
                   "Golden treasures I contain,
                 Guarded by hundreds and thousands.
             Stored in a labyrinth where no man walks,
               Yet men often come to sieze my gold.
                By smoke I am overcome and robbed,
              Then left to build my treasures anew."
 
Sorry I am to admit that I had to think about it for a while.
 
Happy new year to all!
Aaron Morris