Kroger has Colgate Tarter Protection Whitening Toothpaste on closeout. Use a coupon with the closeout price and score a tube for as little as $0.54 if your store doubles!

Colgate Tarter Protection Whitening Toothpaste, 6.4 oz (reg $2.05) $1.54, closeout price
Use $0.50/1 Colgate Toothpaste, Total, Optic White, Max Fresh, or Sensitive, 4 oz or larger, Limit of 4 coupons for same product in same transaction from SS 1/20 (exp 2/9)
Or $0.50/1 Colgate Toothpaste, 4 oz or larger, Limit of 4 coupons for same product in same transaction from SS 2/3 (exp 2/23)
Or $0.50/1 Colgate Toothpaste, 4 oz or larger, Limit of 4 coupons for same product in same transaction from SS 2/10 (exp 3/2)
Final Price: $1.04, or $0.54 with double