Food Safety Report: Kirkland Guacamole, Costco, Saskatchewan, Canada 2 years ago • details 11 Comments Comment Suspected food poisoning. Symptoms: Diarrhea, Nausea, Vomiting, Stomach Pain, Chills, Headache Suspected source: Guacamole Onset: 12 to 24 hours Duration: 4 to 12 hours Sick: Me