I found Arm & Hammer liquid laundry detergents on clearance this morning at Walgreens! Arm & Hammer detergents are buy one get one free through 7/30. Buy two and pay $1.75 each–no coupons needed.
If you have the coupon from the 6/26 Smart Source newspaper insert, save even more! According to the Walgreens coupon policy, a coupon cannot apply to a free item.