What are Cigaratte butts made of?

Many people think that cigarette butts are made of cotton ,it's made of cellulose acetate which is a form of plastic .

So how long do cigarette butts take to degrade?

Various sources have stated that cigarette filters take 18 months to 10 years to degrade. It is safe to say that the cellulose acetate fibers in cigarette filters, like other plastics, are with us for some time after they are discarded. Since environments differ—some places are wetter, dryer, sunnier, colder, hotter, windy, etc.—so too will the degrading time differ. A cigarette butt that is littered in a dry sunny place will degrade differently than one that is littered into a river or on a sandy beach.

But even if cigarette filters were quick to degrade, we would still have fires caused by lit cigarette butts, and the toxins found in cigarette butts would still be harmful. I believe the best way to decrease cigarette butt litter is to educate smokers, rather than try to make filters biodegradable.