First remove the valve at the base of the spiralfow and screw on the soap dispenser the base of the soap dispenser has a male connector which is compatible with most popular hose fittings the black tap will turn the water on and off whilst the red selector opens up the soap compartment to fill and also alternates the flow between plain water or water with soap with the selector on water turn on the black tap and thoroughly wet the area to be cleaned then then the selector to soap for a very