This week at Walgreens, 40-ounce bottles of Tide Simply Laundry Detergent are buy one get one free. Remember, a coupon cannot be used on a free item. Buy two and use one $1.00/1 digital manufacturer coupon. Clip this coupon to your Balance Rewards account before you shop either online or with the Walgreens app. The coupon will be redeemed when you scan your Balance Rewards card or type in your phone number. This coupon can only be used once. The final price is $3.00 each!