1/2 cup butter, melted
1/4 teaspoon celery salt
1/4 teaspoon garlic salt
1 1/4 teaspoons seasoning salt
1 tablespoon Worcestershire sauce
1/4 teaspoon cayenne pepper
1 tablespoon Tabasco sauce 
1 cup Cheerios toasted oat cereal
2 cups Wheat Chex
2 cups Rice Chex
2 cups Corn Chex
1 cup pretzels
1 cup nuts

Instructions:
Preheat oven to 250 degrees.  Mix the first 7 ingredients together.  Mix all dry ingredients in a baking pan. Pour the butter and seasonings over the dry mix, stirring until each piece is coated. Bake for 1 hour, stirring every 15 minutes. Let cool. Store in an air tight container.  

Source: http://www.food.com/