Is the expiration date on a product refers to the last date a product should be?

The expiration date on a product indicates the last date the manufacturer guarantees the product's safety and effectiveness. After this date, the quality may decline, and the product may not perform as intended, but it doesn't necessarily mean the product is immediately unsafe. It's important to check the specific guidelines for each product, as some may still be usable beyond the expiration date while others should be discarded.