In small microwave-safe bowl melt margarine on High. Add seasoned salt and Worcestershire sauce: Mix well. Pour cereal, nuts and pretzels into large resealable plastic bag. Pour margarine mixture over cereal mixture. Seal top of bag and shake until all pieces are evenly coated. Pour contents of bag into large microwave-safe bowl. Microwave on High 5 to 6 minutes. Stirring every 2 minutes. Spread on absorbent paper to cool. Store in airtight container.

For Conventional oven: Preheat oven to 250°. Melt margarine in open roasting pan. Stir in seasoned salt and Worcestershire sauce. Add cereals, nuts, and pretzels and stir until all pieces are evenly coated. Bake 1 hour stirring every 15 minutes. Spread on absorbent paper to cool.