Safety and Handling

Protect Your Hands. Oven mitts, leather gloves, or thick hand towels can prevent freezer burn when handling dry ice.
Ventilation. Sublimating dry ice gives off a fog (carbon dioxide gas) that can be dangerous if in a confined space. Use dry ice outdoors or in ventilated areas.
Fortifier. Dry ice can be used in combination with cubes or blocks of water ice. Solid CO2 will help keep frozen H2O longer.
Wrap It. Confine blocks of dry ice in several sheets of newspaper or towels to slow the sublimation process so ice keeps longer.

Pack on top. Dry ice can be loaded on top or below food in a cooler. YETI notes food is kept cold longer when dry ice is packed closer to the food.
No dead space. When packing a cooler, minimize air pockets to keep dry ice frozen longer. Water, ice or a towel can be used to fill in open spaces in a cooler.
Cover the cooler. For maximum chill, store your cooler in shade and cover it with a blanket or sleeping bag.

Protect Your Hands. Oven mitts, leather gloves, or thick hand towels can prevent freezer burn when handling dry ice.
Ventilation. Sublimating dry ice gives off a fog (carbon dioxide gas) that can be dangerous if confined. Use dry ice outdoors or in ventilated areas.
Fortifier. Dry ice can be used in combination with cubes or blocks of water ice. Solid CO2 will help keep frozen H2O longer.
Wrap It. Confine blocks of dry ice in several sheets of newspaper or towels to slow the sublimation process so ice keeps longer.

Pack on top. Dry ice can be loaded on top or below food in a cooler. YETI notes food is kept cold longer when dry ice is packed closer to the food.
No dead space. When packing a cooler, minimize air pockets to keep dry ice frozen longer. Water, ice or a towel can be used to fill in open spaces in a cooler.
Cover the cooler. For maximum chill, store your cooler in shade and cover it with a blanket or sleeping bag.