Last week, the Walgreens Black Friday ad leaked! I was excited to see that it included so many freebies and moneymakers! Listerine floss will be on sale for $2.99, starting 11/27. Buy one and receive a $2.00 Register Reward, a coupon that can be used for store credit on a future purchase. Use a $1.00 coupon to turn this deal into a freebie! Be sure to print the Listerine floss coupon now; it probably won’t be here for long.