Heloise: The rules of recycling

Is this safe to do? Assuming so, what is the best kind of vinegar to use? We enjoy your column in the Orange County (Calif.) Register! — Bob in Huntington Beach, Calif. Bob, I'm going home — you're in charge now! You are right on the money. A couple of glugs of white or apple cider vinegar in the dishwasher can help keep glassware sparkling ...