Insects are like reptiles: they like it hot, but they have limits to how much they can handle. If you order a hundred feeders, shipped in a box, and accidentally leave it on your porch for too long, they might die. Crickets, hornworms, and silkworms do okay in the heat. Roaches do better. A few others do terribly in high heat. Check out our full write up to see which species you should pick for summer shipping.