We had some of the tiny, easier-to-lose pieces left over as extras, just like we do with every other Lego set that comes into our house. But I wouldn't say it was an alarming number. You might want to go back and double check some things, or even be sure they built all the mission models. There were lots of little models this year with all of the groceries, bacteria, etc.
Sonya in Harrisonburg
Did anybody else have an alarming number of left over piece-parts after the kids said everything was built?