Purex laundry detergent is on sale this week at Walgreens, buy two get two free. (My store has it tagged four for $11.98, which is the same price as buy two get two free.) Buy four, and make sure at least one of them is Purex Plus Clorox 2 Detergent. Redeem a $1.00 Ibotta offer and a $1.00 SavingStar offer. Get each detergent for $2.50!