Unscrew the pump rod at the top. First fill the container with the specified amount of water and then add the correct amount of cleaner (see the cleaner’s label for dilution recommendations). Use different foam cartridges depending on the foaming capacity of the cleaner. Screw the rod back on and pressurise the tank by pumping. Depressurise and empty the sprayer after use, fill with water and then rinse the hose and nozzle.