$2 in Savings on Listerine Posted by Harbor Master on 3 January 2018, 5:19 pm Tweet The coupons Expire 30 days from print. The print limit is two of each coupon. The coupons state limit of one coupon per person and no more than four coupons of any kind for the same product in the same transaction. Click here to print a coupon for $1 off any One Adult LISTERINE Mouthwash (1L or larger) Click here to print a coupon for $1 off any One LISTERINE HEALTHY WHITE product (16 oz. or larger)