Superworms are sensitive to cold weather. During the winter, we must double box all Superworm shipments to states that require Winter Packing. Description: (Zophobas morio) Lizards, frogs, salamanders, birds, and other insectivorous animals readily accept Superworms. Their hard chitin may make them less suitable for arachnids and some predatory insects. Superworms are approximately 2" long and 1/4" in diameter. Care instructions: On arrival of Superworms, shake them from their bag or box into a plastic container with slick side walls (kitty litter tray, dish pan, plastic aquarium, etc.). The container should have a bedding of chicken mash, wheat bran, corn meal or dry oatmeal. When bedding becomes sandy in appearance, add more bedding. Moisture is obtained through small pieces of raw potatoes, carrots, apples or celery, which is essential. Do not refrigerate Superworms as it is too cold and will kill them. Superworms can withstand heat up to 90 F. They will not change into a pupa or beetle as long as they are kept together. Superworms have a life expectancy of around three months.