Walgreens – Arm & Hammer Laundry Detergent $1.99 (No Coupons Needed) The links in the post below may be affiliate links. Read the Full DisclosureApril 15, 2018 by Kim Julian This week, head into Walgreens where they have Arm & Hammer Liquid Laundry Detergent or Power Packs on sale for just $1.99! (regularly $6.49) No coupons needed- what a great stock up price!