Cigarette Butts: The World's Most Prevalent Litter Problem

The most common litter is cigarette butts. Cigarette butts are small, cylindrical filters that are attached to the end of cigarettes. They are made of cellulose acetate, a plastic that is not biodegradable. Cigarette butts are the most common form of litter in the world, and they can take up to 15 years to decompose.