I am pleased to report that the ants have officially left the minivan! I employed a two-prong approach to win this war. First and foremost, I removed the donut. I think that once their food was gone, the ants decided to leave. Second, I put out ant traps; the kind that have a yummy but deadly liquid that (supposedly) they take back to their hive. I really don't believe that the ants take the bait back to the queen and pull a heaven's gate on everybody, but the ants are gone from the van!