Guaranteed fresh until printed date. Guaranteed fresh until printed date or this snack's on us. Questions or comments? 1-800-352-4477. Mon-Fri 9:00 am to 4:30 pm CT/email or chat at fritolay.com. Partially produced with genetic engineering. Good fun! It all starts with farm-grown potatoes - cooked and seasoned to perfection. Then we add the tang of sour cream and mild onions. So every Lay's potato chip is perfectly crisp and delicious. Happiness in every bite. Connect with Us: Facebook; Twitter. No artificial flavors. No preservatives.