Rite-aid is having a sale buy 4 get a 10$ rebate. I was in R.A. the other day and I think they were roughly 5-6 dollars for the Listerine Total Care. Under the thread "all about coupons" you can find a coupon for 2.00 dollars off 1. Print four coupons (your going to have to use another computer) and buy 4 Listerines @ around 18-24 dollars.. you will save 10 dollars with the rebate, and then another 8 dollars with the manf. coupons. You'll end up paying 2-6 dollars for 2000ML of mouthwash. My RiteAid is evil, they are very picky with Internet coupons, "watermark" or "seal" whatever. So maybe call ahead to see what the policy of your store is. Maybe i'm entirely wrong with my findings also, I'm farely new to using coupons + I've never used four of the same coupon. So good luck.