There is a new coupon out for Colgate toothpastes. Usually the 4.6oz boxes are $2.48-$2.98 at Walmart but there are some displays that have the Optic White and Max toothpastes for $.94. You may have to hunt a little for the bins though.
Colgate Optic White toothpastes 4.6oz are $.94 at Walmart
Use the $1.00/1 printable coupon for Colgate Optic White, Total, Max or Sensitive toothpaste
Final: FREE with $.06 overage