The eggs were sold at Costco stores as Kirkland Organic Brown Eggs in 18-count cartons with the following expiration and plant codes: April 1 062, 35 P1776 and April 8 069, 35 P1776.

They were sold at Safeway and Pack n’ Save stores as O Organic Grade A Large Brown Eggs in 12-count cartons with the following expiration and plant codes: April 1 062, 35 P1776.

Customers who bought the eggs are urged to return them to the store where they were purchased.