Frito-Lay recalls Tostitos chips over undeclared milk. The FDA issued a Class I warning—here’s what it means and who should check their snacks.

A limited number of 13-ounce bags of Tostitos yellow corn tortilla chips were recalled by Frito-Lay in late March because of undeclared milk.

Frito-Lay is recalling a limited batch of Tostitos yellow corn tortilla chips because they could have other chips mixed in that contain milk, a major food allergen.