Walgreens: Arm & Hammer 50 oz. Detergent $1.99! January 10, 2018 By Leah Leave a Comment Disclaimer: This post may contain affiliate links. You can view MCC’s Full Disclosure Policy HERE. Arm & Hammer 50 oz. Detergent $1.99 (Reg. $6.29) Shop Walgreens Online HERE Hurry to Walgreens and grab Arm & Hammer 2x 50 oz. detergents for ONLY $1.99 each. That is ONLY 6¢ per load! Choose free store pick up and pay no shipping charges!