The way it works is that when you find items on the shelves that have passed their expiration date, you take one expired and one fresh one to the checkout. Let the cashier know which are fresh and which are expired and they will keep the old one and give you the fresh one without charging you anything! They used to exclude alcohol and tobacco products, but currently anything in the store that has a date on it is fair game including batteries, deodorant, camera film, disposable cameras, blood glucose monitors, blood glucose test strips, ink cartridges, and even spackling compound if you find it.
Other stores used to have a similar policy including Albertsons and Kroger. I'd like for anyone who reads this who shops at a grocery store to pay attention or maybe even ask a manager to find out if there are any other stores that have a freshness guarantee.

