Girl Scout Cookies...

If a girl scout shows up at your door, do you HAVE to buy cookies?

I mean, let's say you don't really want them. Are you discouraging the girl if you say no and sending her down the wrong path? Or, are you misleading her, by doing a symptathy buy, since that's not how sales really work?

This year, the doorbell rang and I KNEW I didn't want ANY cookies at all in the house (having learned from last year).

What to do?

P.S. One option was to buy a box that would be "donated" with the proceeds going to the "Army" (that's the word she used) or "Cancer" (I didn't ask further).