Place the flat-plastic portion of the KidCo Bi-Fold Door Lock over the top of the bi-fold door. Make sure it is placed away from the hinges and fold in the door and the wand holder is facing you.
Insert the plastic wand into the wand holder on the front of the lock. Push it up until it locks into place.
Close the bi-fold door.
Slide the lock over the fold in the door using the wand. This will lock the door. When you want to open the door, slide the lock back from the fold in the door with the wand and push the door open.