HOW TO CHANGED SPONGE ROLLER MOP REFILL

You can push the white lever all the way forward, toward the mop head. When you do this, the sponge will eject. It will still be connected to the metal rod, but you can slide the refill off the hook at this point. Then when you go to put the new sponge refill on, slide the metal strip onto the metal hook on the mop. Once this is done, pull the lever back toward you like you would do when wringing. This will pop the sponge into place. Here's a visual: https://www.youtube.com/watch?v=PucX1mPA_DY