We have people/kids in our neighborhood all the time doing the door-to-door thing. I rarely answer the door.
Sure, I sold my GS cookies as a kid, but I was never allowed to go door-to-door, and my parents refused to take the order forms to work. I was always one of those kids sitting at the table just outside the store entrance.
Now, I have to deal with the school fund-raisers for my son. Sadly, he isn't even in kindergarten yet. I'm not about to take him door-to-door, but I do mention them to my parents or his father's family IF I think they MIGHT be interested in something I see in the catalog. Otherwise, we just don't do participate.
Just last week, he brought one home for magazine subscriptions. Then, I noticed that there's another one coming in October.