Remove the pillow's cover.
Turn the floor steam cleaner on according to the manufacturer's instructions. Be sure to fill the tank's reservoir with water and attach any cleaning pads included with the machine.
Place the pillow on a clean floor or table.
Place the steam cleaner's head on the top of the pillow and slowly move it down the surface of the pillow. Repeat until you steam the entire surface.
Flip the pillow and repeat step four.
Leave the pillow uncovered for five to 10 minutes to allow it to dry. Then replace the pillow's cover.