For decades, products have had expiration dates. However, many companies are vague about the shelf life of their products. Rather than use words like expires by, they use best before or sell by. However, consumers can interpret these words in different ways. California has passed a law that goes into effect in 2026 to change this wording. Many expect other states will quickly adopt these changes, too. It could even become a federal law. Soon, in California, products will use the terms best if used by or simply use by. Experts say this change will reduce waste and stop people from throwing away products that are still good to use…