1) Soak wood chips for approximately 20 minutes. 2) Slide lid open and fill with wood chips. 3) Place BBQ Smoker Box on top of rock or flavorize bars. 4) Light up Barbecue, as you would do normally. 5) When smoke appears start the cooking process. 6) Smoke will last approximately 15-20 minutes and will enhance the flavor of your favorite dish. 7) Before reusing the BBQ Smoke Box, dispose of the residue in the box, refill and reuse.