The product was sold in 150 gram packages in British Columbia, Alberta and Ontario and may also have been distributed nationally. Customers are told to either throw the mushrooms out or return them to the store where they were purchased. There are no reports of illnesses associated with the product. Food contaminated with Listeria may not look or smell spoiled, but it can make you sick. Symptoms may include vomiting, nausea, persistent fever, muscle aches, severe headache, and neck stiffness.