For regular maintenance, hose off the surface periodically and spot clean with a damp cloth.
To remove stains, use water and gentle, colorless liquid detergents. Let the detergent sit for a few minutes before rinsing with lukewarm water.
If you choose to use a pressure washer, keep the nozzle at least three feet from the surface of your furniture.
Avoid using products that will dull the surface, such as ethyl alcohol, abrasive solvents, cleaning powders, steel wool or scouring pads.
To prevent stains, avoid prolonged contact with oily substances and dyes.