Purex® Complete 3-in-1™ laundry sheets is simplifying the process. Say goodbye to separate products, measuring, bulky bottles, spills, and messes. Purex® Complete 3-in-1™ Laundry Sheets are the trouble-free alternative to using multiple laundry products, like traditional liquids and powders. Simply drop the laundry sheet into washer, the detergent is released during the wash cycle. Once wash is complete, transfer the laundry sheet with clothes to dryer. The stripe is heat activated by the dryer to soften and remove static. It's that simple.