Check the MobiSave app for a $0.40 rebate offer for any brand of dish soap. Walmart sells 12.6-ounce bottles of Palmolive Dish Liquid for $0.88. Buy one, use a $0.25 coupon from the 5/15 Smart Source insert, and pay $0.63 at the register. Next, submit your receipt for the $0.40 MobiSave rebate offer. The final cost is only $0.23!