Did you guys know that Dollar General now has digital coupons, in addition to their printable ones? Simply go to their site, create an account, and load your coupons. Not only do they occasionally offer Dollar General coupons, but manufacturers' coupons can be loaded to your account, as well. When you are ready to use your coupons, all you have to do is enter your phone number on their keypad, and your eligible coupons will be applied to your purchase.
Another good thing at Dollar General is that they DO allow overage. Of course, this overage can only be applied to your other purchases. They can not give you any money back.
Go HERE to read their complete coupon policy.