Beginning December 3rd, 2010, the New York City Department of Sanitation will require all City residents to fully encase within a sealed plastic bag all mattresses or box springs being discarded for DSNY collection. Under the new rule, failure to place a mattress or box spring out in a proper bag can result in a $100 fine. The Department will delay enforcing the new set-out rule for 30 days, followed by full enforcement beginning January 3rd, 2011.
Read more here