This coupon has expired $10.00 for Enfamil Premium® Gentlease® Infant Formula Powder. Offer available at Costco. expires on 12/31/17 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.