A cardboard egg flat is ideal for providing a place for your feeder insects to crawl and hide. Increase the surface area for your insects so they can multiply and thrive. Perfect for feeder insect colonies (such as dubia roaches, crickets, and mealworms). Please egg flats vertically in your colonies. Note: The egg flat from your fridge contains bacteria like salmonlla that can infect your feeders/pets. Use clean, egg flats specially manufactured for reptiles.