You can use good quality fiberboard, also known as corrugated cardboard, which you can purchase online or at a local hardware store. You can also use plastic or wooden boxes to ship with dry ice. Do not use steel drums or jerrycans to ship dry ice.

Packs of dry ice should be on the bottom, followed by food items. You should alternate between dry ice and food items, filling in excess gaps with bubble wrap and newspaper, until the box is full.

You will need a label that says “Dry Ice” or “Carbon Dioxide Solid. " You will need a label that reads UN 1845, which also indicates the package contains hazardous materials. You will need a label indicating the net worth of dry ice in your container. Make sure you know how much dry ice you used during packing. Packages of dry ice will have their weight written on the label.

You can receive a label free of charge at most post offices. You can also call the FedEx company to have a label shipped to you for free by calling 1-800-463-3339. Make sure you put the Class 9 label on the same side of the package that contains the UN 1845 label.

You may have to fill out what is called a shipper’s declaration. This is a slip that includes basic information about yourself and the recipient. You will also need to put in some numbers indicating what hazardous material you are shipping. The worker at the post office should be able to help you with the form.