The large jugs of Purex Laundry Detergent are on sale for $5.99 this week at Walgreens. Buy two 150-ounce jugs, and use one $2.00/2 printable coupon at checkout. Later, submit you receipt twice for a $1.00/1 Ibotta rebate offer. This offer has a limit of two per receipt. The final price is $3.99 per detergent!