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Amazon [amazon.com] has 1-L Listerine Cool Mint Zero Alcohol Mouthwash for $ 6.57 – $ 1.65 when you ‘clip’ the coupon on product page – 5% when you checkout via Subscribe & Save = $ 4.59. Shipping is free w/ Prime or on $ 25+.
1-L Listerine Cool Mint Zero Alcohol Mouthwash $4.60 w/ S&S + Free Shipping w/ Prime or on $25+