Walgreens has Arm & Hammer Laundry Detergent on sale for just $1.99! Regularly $7.69-$7.99. Choose from Liquid, Power Paks, Scent Boosters and more. Click here to get the deal. Plus, save an extra 10% off orders of $25 or more with code WAG10 at checkout. Choose free store pickup w/ a $10 minimum order or get free shipping at $35.