Mix the Chex, pretzels, crackers and nuts into a large foil pan.
Melt the butter and combine with Worcestershire sauce and Cattleman's Grill Carne Asada Seasoning. Pour the butter mixture evenly over the Chex mixture and stir it around to evenly coat everything. For a little added heat, add a little dry rub and mix again.
Preheat your Yoder Smokers YS640 (or other smoker) to 250°F. Place the pan of Chex mix on the smoker and let it cook, stirring every 15 minutes to keep the mixture from scorching on the bottom. Cook for 1 hour and 10 minutes. Let cool for 10 - 15 minutes.