
When you place dry ice into warm or hot water, clouds of white fog are created. This white fog is not pure CO2. gas, but rather a condensed water vapor, mixed with invisible CO2. The extreme cold causes the water vapor to condense into clouds. Resulting in a heavy fog carried by the CO2, and will settle towards ground level. You can produce enough ground - hugging fog to fill a medium sized room with roughly a pound of dry ice. Do not lay down in this fog, or allow small children or pets into concentrated area, heavy confrontations of CO2 gas can cause asphyxiation.