Place your foot on the foot pedal of the RV toilet. Look for this pedal on the bottom front or the side of the foot-operated toilet.
Press the foot pedal all the way down, draining both the solid and liquid waste from the RV toilet, as well as rinsing the bowl. Release the pedal.
Press the foot pedal half-way down to close the valve and fill the toilet with water. Release the pedal.
Allow any remaining waste matter to soak for 15-30 seconds.
Press the foot pedal all the way down again to empty the toilet bowl and rinse any remaining particles down the drain.