Amazon has the Listerine Ultraclean 1-Liter (33.8 oz.) Oral Care Antiseptic Mouthwash (Cool Mint) for $5.05 - 20% off (check “Save an extra” box, eligible on first S&S order for this product) - 5% off with Subscribe & Save (can cancel at any time) = $3.79 with free shipping on $35+ or with Prime.