Apr 16, 2011 - Snack foods contain preservatives in order to maintain shelf life. Different types of snacks have varying expiration dates: Potato chips will last one month after expiration date. Crackers and pretzels can last up to three months.

1. Cheez It Expiration Code

Cheez It Expiration Code

Cheez-It is a cheese cracker manufactured by the Kellogg Company through its Sunshine Biscuits division. Approximately 26 by 24 mm (1.0 by 0.95 inch), the almost square crackers are made with wheat flour, vegetable oil, sharp cheddar cheese, salt, and spices. Expiration dates on cheese are not carved in stone either, however, and just because your cheese is past its expiration date does not mean it has expired! Use your common sense and your instinct when making the decision to keep or toss a cheese that has exceeded its stated use by date.