Sweep or blow off loose dirt, leaves, and debris
Rinse the patio with a garden hose
Mix warm water with a mild dish soap or concrete cleaner
Scrub the surface with a stiff-bristle brush
Spot-treat stains with an appropriate cleaner
Use a pressure washer on a low to medium setting if needed
Rinse thoroughly to remove all cleaner residue
Let the patio dry completely
Apply a concrete sealer if desired