Try your luck on this new Listerine “21 Day Challenge” Instant Win Game for a chance at winning 1 of 333 prizes valued at $100 each! Prizes include $100 Amazon Gift Cards, Fitbits, Nike Gift Cards, and more. Note that cannot play the instant win game the first day you register…it becomesactive for you the next day you’ve signed up. Enter once per day through December 31st. Good Luck! (THANKS FREEBIESHARK!)