TRENTON, N.J., July 31: Cigarette butts are the world's most littered item with nearly 4.5 trillion being tossed each year and last year in the United States, it is estimated 1.69 billion pounds of butts ended up as toxic waste. TerraCycle, the world's leader in the collection and repurposing of complex waste streams works with cities and municipalities globally to recycle cigarette butts. Since 2012, when TerraCycle launched its first cigarette recycling program, it has collected hundreds of millions of butts around the world.