*** BUYER NOTICE *** If your shipment does not arrive well, contact us within 24 hours and please provide photos of the shipment. We guarantee live delivery to locations between 40° ~ 80°F *** Mealworms are an excellent source of vitamins and minerals which makes them a perfect part of the reptile diet, as well as being an important food source for many species of birds. As long as they’re kept refrigerated, they will last for a number of weeks.