EDIT: This is no longer available.
Here's another free Emergen-C offer on Facebook. I can't recall ever seeing this in a store before. They do try and sell some of their product instead of giving it all away, right?
Then again, I'm not the most observant person. While waiting for my brother to pick me up at the airport, I got in the wrong car and didn't realize it until four days later. The Arthur family was really nice to me though!