There are several really nice coupons available for laundry detergent available right now. I think this one for Arm & Hammer detergent might be the best one.
Arm & Hammer Detergent starts at $2.83 at Walmart
Use the $2.00/2 printable coupon for Arm & Hammer Detergent
Here’s another deal if you prefer the Oxi-Clean stain remover to go along with the Arm & Hammer Detergent.
Arm & Hammer Laundry Detergent is $2.83 and Oxi-Clean is $3.86 at Walamrt
Use the $2.00/2 printable coupon for Arm & Hammer Laundry Detergent AND Oxi-Clean Stain Remover (Look under zipcode 76013)
Final: $4.69 for both