Walmart has Listerine mouthwash for a great price. And, couponing at Walmart is easy and straightforward.
For this deal:
Buy 1 - Listerine Mouthwash, 1L, $5.97 at Walmart
Use - Save $1 on any ONE Listerine Mouthwash (500mL or larger) or Listerine Pocketpaks (72ct or larger) or Listerine Pocketmist product (2ct), SAVE 03/12, ex. 04/01
Pay - ONLY $4.97 for ONE 1L Listerine Mouthwash!