CVS - 3 FREE Crest toothpastes

Transaction #1
Buy 1 Crest Pro-Health or 3D White Toothpaste $3
-$1 Crest Pro-Health coupon 
-$1 Crest 3D White coupon
Pay $2
Get $2 ECB
Total - FREE

Transaction #2
Buy 1 Crest Pro-Health or 3D White Toothpaste $3
-$1 Crest Pro-Health coupon
-$1 Crest 3D White coupon
Also use $2 ECB from previous transaction
Pay $0
Get $2 ECB
Total - FREE

Thanks Couponing for 4!