In 2 large disposable tin roasting pans, pour half of each cereal box in each pan. Pour half the pretzels, peanuts, and cashews in each pan. Stir until well mixed.
In a saucepan on the stove, melt butter, sauces, and seasoning, stirring over low heat.
Apply an even layer of sauce to the top of each tray of mix. Bake for 30 minutes.
Pull out, stir, apply more sauce, bake 30 more minutes. Repeat this process until sauce is gone (Brian does 3 hours total).
Let cool and store in airtight containers or gallon baggies.