How to position it
Wrap dry ice in paper or place it on a piece of cardboard on top of the food — never directly on glass shelves or bare food.
What not to do
Don't seal it in airtight containers, don't use it in a closed small room, and don't handle it bare-handed.
When to replace
Check a few times a day without leaving the door open. Replace when little ice remains.
Dry ice releases carbon dioxide gas and requires proper ventilation. Handle only with insulated gloves, and never seal it in an airtight container.
Last reviewed: September 2026