The Food and Drug Administration is using its most severe notice in a recall of more than 6,000 bags of chips in two states because of “undeclared milk.”

The Food and Drug Administration (FDA) says a previously announced recall of certain bags of Lay’s potato chips in Oregon and Washington now falls into “Class I” status, its highest risk

Federal regulators have upgraded a product recall of Lay's Classic Potato Chips to the highest risk level for a batch that may contain undeclared milk ingredients. Last month, Frito-Lay issued a recall warning that more than 6,