Arm & Hammer laundry detergent is cheap with a new $1.00 coupon! Walmart has a 50-ounce bottle for $2.87. Apply the coupon to pay $1.87.

The coupon has no size restrictions and can be used on the smallest bottle available.

Use one $1.00/1 Arm & Hammer Liquid Laundry Detergent (coupons.com)

Or $1.00/1 Arm & Hammer Liquid Detergent from SS 2/5

Final Price: $1.87