This coupon has expired $2.24 for CORE Foods Overnight Oat Bars. Offer available at Walmart, Walmart Grocery. expires on 05/20/20 Other coupons you may be interested in $1.00 for Jarritos (expiring on Monday, 01/02/2023). Offer available at multiple stores. $1.00 for Sangria Senorial (expiring on Monday, 01/02/2023). Offer available at multiple stores.