The month-long recall has now been upgraded up the highest level of alert, over fears that consuming the product could cause severe allergic reaction

Frito-Lay is recalling bags of Lay’s Classic Potato Chips after the FDA increased the risk level of the product to its highest level of risk classification.

The FDA has classified a previous Frito-Lay potato chip recall under its highest risk level after some bags of Lay's Classic Potato Chips were found to potentially contain undeclared milk ingredients.