You can collect 10 cigarette butts to exchange for a free cup of coffee in New York City now. Fei Xiang, a food truck owner is running this campaign in Flushing in New York City. /VCG Photo

People are seen exchanging their collected cigarette butts for a cup of coffee free of charge from Fei’s food truck. /VCG Photo

Fei put this campaign as part of his business to call on people to make the environment clean and hoped that this could help more people to stay away from smoking. /VCG Photo

According to Fei, around five to ten cups of free coffee are exchanged with cigarette butts a day. /VCG Photo