Egg Cartons (Styrofoam) Garbage Bin See Alternatives Styrofoam Cartons Are Plastic #6 Styrofoam egg cartons are made from polystyrene, or plastic #6. Learn more about plastic #6. Alternative Ways to Recycle Eggland's Best Mail-Back Program You can mail Eggland’s Best styrofoam cartons back to their manufacturer. Learn more here. Did You Know? Paperboard Cartons Are More Eco-Friendly Than Styrofoam Ones As you grocery shop, think about where your food packaging will end up. Eggs often come in paper or styrofoam casing. Did you know that paperboard packaging is the more eco-friendly option? It’s recyclable and biodegradable. Styrofoam is less so because it’s made from plastic #6, which is made from petroleum and often not recycled. Even if paperboard ends up in landfill, it will break down and leave no harmful traces. Designing a More Eco-Friendly Egg Carton One Hungarian graduate student designed an egg carton made from far less material. It is a design change that could have a huge environmental impact because it cuts down on every household’s waste. Her finished product is a single piece of cardboard that flips open and shut. View this egg carton design.