How do I clean and maintain the cook chamber?

Open the grease drain to remove grease, use a putty knife to remove debris, spray a mild degreaser and let it sit for 10 minutes, then steam clean with a pressure washer while the grease drain is open. Ensure the drain is clear, close it, coat the chamber with Pam cooking oil, and heat to 200°F for 10 minutes. Your smoker is then ready for storage or cooking.