5 Rules for Using Dry Ice in a Cooler

Keep the cooler slightly vented Dry ice sublimates into CO2 gas, which can build up pressure and displace oxygen. Always crack the lid or leave the drain plug open to prevent a pressure explosion or suffocation risk.

Never touch dry ice with bare skin Dry ice is -109°F and causes frostbite almost instantly. Use heavy gloves or tongs to handle it.

Don’t store dry ice in glass containers The extreme cold can shatter glass from thermal shock. Use only plastic or metal containers.

Layer dry ice with regular ice for food Place dry ice at the bottom, then a layer of newspaper or cardboard, then food, then regular ice on top. This keeps frozen items solid without flash-freezing everything.

Avoid opening the cooler in confined spaces CO2 gas is heavier than air and can accumulate in small areas like a car. Always open the cooler outdoors or in a well-ventilated area.