Print these Listerine Mouthwash $2/1 and Listerine Whitening Product $2/1 coupons quickly, before they disappear.  These are on sale at Walgreens this week for $3.99 and you earn a $1.00 Register Rewards with purchase, so $2.99 after promo and $0.99 after coupon!  Remember, you can print each coupon twice.