Shell: Use common kitchen cleaning products. Avoid using aggressive products. These surfaces are best cleaned with a neutral cleaning product diluted in water. Powder Coated Legs: Use Extremis multi cleaner, a 100% biodegradable detergent or common kitchen cleaning products. Avoid using aggressive products. These surfaces are best cleaned with a neutral cleaning product diluted in water. Galvanized Steel Legs: Clean with lukewarm water and a mild detergent or Extremis multi cleaner. Sunbrella: Shake or brush off loose dirt immediately. Spray Extremis Multi Cleaner. Use a soft brush and make circular movements. Let the suds soak in for a moment. Rinse thoroughly to remove all soap residue. Simply allow to dry