There is an unadvertised Register Reward deal for Listerine at Walgreens that runs thru 6/12.  When you buy 1 Listerine Whitening Rinse, you will receive a $2.00 Register Reward or buy 2 and receive a $4.00 Register Reward.  You can get Listerine Whitening Plus Restoring FREE this week thru 5/28.

Buy 2 Listerine Whitening Plus Restoring, 16 oz $5.99
Buy 2, Receive $4.00 Register Reward, Limit 1
$3.00 off with in ad coupon, Limit 3
Use 2 $1.00/1 Listerine Whitening Rinse Product, any 16 fl. oz. or larger from SS 1/9
Pay $3.98, Receive $4.00 Register Reward
Final Price:  $0.02 Moneymaker

Thanks, Wild for Wags