It never fails. After the school buses start rolling again and the kids are back in school, a person can expect someone knocking on their door looking to sell some product for the local PTA. Using the students to raise funds for an organization that they are not members of may seem odd, but door-to-door fundraising has been around for a long time.
Even with incentives, an individual seller may not manage to increase the funds of the treasury of the organization, but when the effects are multiplied over hundreds of kids, a PTA may be able to sponsor various activities throughout the year.
Little Leagues, Boy Scouts and the Girl Scouts also use their own door to door fundraisers from time to time. They are easy to set up and usually managed by both the company that offers them and the organization's treasurer. A good rule of thumb before agreeing to a fundraiser of this type is to make sure that the provider of the product has an attractive catalog. The catalog lets a person being solicited now that the product is legitimate and will give the consumer an idea of what it looks like before it arrives.
The downside of using this method is that many people do not like people showing up on their doorstep with products to sell. While telephone salespeople have replaced the door-to-door salesmen for the most part, there are people who will not react kindly to anyone on their property. The organization running the event should make sure to instruct the people selling its product in safe and courteous sales techniques. It never hurts to cater to people's vices either.