THIS MAY NOT WORK FOR EVERYONE AS SALE PRICES SOMETIMES VARY AMONG STORES!
Deal scenario:
Buy 1 Listerine Whitening Mouthwash marked down to $1.99Use the$2 off 1 Listerine Whitening Mouthwash couponFINAL COST: FREE!Buy 1 Listerine Whitening Mouthwash marked down to $1.99Use the $1 off 1 Listerine Whitening Mouthwash coupon (click ‘Show All’ category on left then go to page 5)FINAL COST: $0.99!
(Thanks @moneysavingmom)