In preparation for spot cleaning as well as full surface cleaning, you will need a bucket of water, one of the recommended scrub brushes with an extension handle and one of the recommended cleaners.
Work in small manageable areas. Avoid cleaning in direct sunlight, the UV and heat will dry the surface quickly as you attempt to clean.
Saturate the area with one of the recommended cleaners and allow the cleaner to soak for 30-60 seconds. Do not allow the cleanser to dry or evaporate before scrubbing. Rinse area thoroughly with water after scrubbing.
Using the recommended brush and extension handle, scrub using moderate downward pressure, first scrubbing in the direction of the grain and then against the grain getting into the surface texture. Do not allow the treated area to dry before rinsing thoroughly as this will allow dirt residue to dry in the surface texture.
Thoroughly rinse the treated area with clean water, then allow the area to completely air dry. Note that any residual cleaner residue can leave a difficult to remove surface film, always rinse thoroughly and never allow the cleaner to dry/evaporate on the surface prior to rinse.