The reason behind circular indents on plastic milk jugs has been driving social media users crazy as a dairy organization has ...

Another social media user suggested the indent has to do with the carton’s ability to expand in cold temperatures. “It’s so if you freeze the milk the bubble gives it someplace to expand to ...

A California dairy is utilizing its milk cartons to urge voters against a ballot initiative. It’s a new frontier in political advertising. “No on J,” reads the ad, first reported by the San ...

Why do plastic milk jugs have a circular indent on the side? The circular indent on the side of a plastic milk jug is not just for decoration or to help determine if the dairy product is expired.