Stack an in-ad coupon with a $1.00 printable manufacturer coupon to save on Listerine Antiseptic mouthwash! The mouthwash is regularly priced at $6.29 at Rite Aid. Buy a one-liter bottle and use a $1.00 manufacturer coupon and a $1.50 in-ad coupon. Find the in-ad coupon on page 10 of the weekly ad. After the coupons, the mouthwash is $3.79!