I'm lovin' this deal. I shop often at CVS and I try to always use my reusable bags. Look for the little green card (.99) and attach it to your bag. Every 4th time you use it you will earn $1 ECB.
Here is the fine print on the back of the card:
“To earn Extra bucks for a transaction in store, your Extra care card, green bag tag, and reusable bag must be presented w/ purchase at checkout. Limit of one green tag use/scan per day per household. Every 4th purchase your ECB will print at the bottom of your cash register receipt as a $1 coupon good for your next purchase. Extra bucks can be used until the exp. date shown on the coupon….”