Preheat oven to 200 degrees. Gather your ingredients so that you have everything close at hand on the table or counter.
Using a large roasting pan (with lid) measure out 2 cups of each: Pretzels, Cheddar Cheese-its, White Cheddar Cheese-its, Ritz Sticks (I like to buy the wheat kind, if I can find them), Wheat Thins, Oyster Crackers, Mixed Nuts, and the Chex cereal. Using a wooden spoon, gently fold the mixture to incorporate. I save the Chex for last in an effort to not crush them when I mix the ingredients.
In a glass measuring cup, mix together the vegetable oil, dill weed, garlic salt, and ranch dressing mix. (If using my homemade mix, measure out 3 tablespoons of the mix).
Pour oil mixture over the crackers and gently stir to fully coat. You'll want to take your spoon all the way to the bottom to mix everything well.
Cover the roaster and bake in preheated oven for 1 1/2 hours, gently stirring every thirty minutes.
Allow to cool before serving. Store in a covered container. Makes 17-18 cups.
*Feel free to use whatever combination of crackers, pretzels, and cereal that you like most. Some years I find different crackers to use at the store, but in general those listed in the ingredients are the basic ones that I look for.