I've actually mixed cocktails (the adult beverage type) using one of those.  (Not previously used for herbicide, straight out of the box).  We could probably invent some new drinks, though.  How about one that is 5 oz. napalm, 5 oz. cyanide, and a splash of tear gas on top?  We could call it the "50% Chance of Killing Waterhemp" maybe?