Although your BBQ is designed to be used outdoors, it still needs regular maintenance and protection from the harsh natural elements to prevent rust. 

• Use a BBQ cover when not in use.
• Ensure that your BBQ is absolutely dry before covering or storing. Trapped moisture is the cause of rust on BBQs. 
• Clean grease, fat and other cooking residue off after each use with warm soapy water, rinse and leave to air dry. 
• Apply a stainless steel BBQ protector to stainless steel surfaces, and powder coat protector to powder coated surfaces.
• Store inside the home during the winter season / when not in use for long periods of time. 
• Inspect your BBQ every month during winter for spotting. It is important to remove the spotting ASAP to prevent permanent discoloration and damage to your BBQ. This is best done with a stainless steel cleaner/cutback solution, or if the spotting is larger and harder to remove, use a stainless steel/metal polish and then a cleaner/solution. Always use a soft cloth to clean your BBQ.
• Never use abrasive heavy duty sponges or scouring pads on the exterior of your BBQ, these
  products will begin to remove the stainless steel finish resulting in an uneven surface and faster
  rusting in the future.