Litter refers to rubbish that is carelessly dropped or left around, particularly in public places.
Regular Websites
Cigarette Litter is a not-for-profit organization established for the purpose of hosting educational campaigns aimed at reducing the amount of cigarette litter. Its mission and facts about cigarette litter are presented, including information about smokers, fire danger and enforcement of anti-litter laws. Photographs, cartoons and images are also available. - Cigarette Litter
http://www.cigarettelitter.org/
As a private organization, Litter Project was formed to inspire a hundred thousand people to each pick up one piece of litter each day, to empower people and organizations to organize community improvement projects, and to encourage enjoyment in involvement. Printable slogans and pamphlets are available from the site, while other products are available for purchase. - Litter Project
http://www.litterproject.com/