While sipping milk directly from the carton might seem innocent enough, it can result in premature spoilage due to bacterial contamination from the human mouth.

The human mouth naturally contains bacteria and microbes that may continue to thrive in your milk carton when stored in the fridge, even if you prevent backwash.

Backwash becomes more concerning if you’re sick. As per the Centers for Disease Control and Prevention, norovirus can be transmitted through food and drink, including milk.

To ensure freshness, store milk at 37 degrees Fahrenheit in the fridge, keeping it away from warmer temperatures near the front and refrain from drinking directly from the carton.