Use coupons and a new app to score moneymaker Listerine at Rite Aid! The floss is on sale for $2.49 through today, and there is an applicable $0.50 in-ad coupon on page 8 of the weekly ad. Clip the in-ad coupon and use it with a $1.00 printable manufacturer coupon. Later, submit your receipt to MobiSave to receive $1.00 cash back. MobiSave is a new rebate app similar to Ibotta, Checkout 51 and Snap. After the sale, coupon and rebate, this floss is a $0.01 moneymaker!