We don’t want people to toss butts on the ground as it is. If you made them biodegradable people would get the idea that it’s okay now.
Also, profits. It costs more to make biodegradable filters. That comes out of their profits so why bother?
Also, Also, nicotine is toxic to so many things. You could make a cigarette biodegradable but there is no guarantee that things would eat it in a timely fashion.
Latest Answers