This is a Costco Quality Alert Our records indicate that you recently purchased Kirkland Signature Organic Milk. It has come to our attention that the quality of the milk on certain lots are not up to Costco standards due to fat separation. The lot code affected for Kirkland Signature Organic 2% Milk is Best Before June 18, 2016. The lot codes affected for Kirkland Signature Organic 1% Milk are Best Before July 8th, July 9th, or July 10th 2016. If you purchased one of these lot codes and are not happy with the product for any reason please return it to your local Costco for a full refund. We apologize for any inconvenience this issue may have caused.