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Message: [QUOTE="SubbaBub, post: 3602498, member: 523"] Just don't touch it with bare skin. Otherwise it's perfectly safe for this application. CO2 is also heavier than air. You can dump it in your sink and trickle a slow stream of water. It will dissolve rather quickly and fill your sink up with fog that is harmless CO2 so long as you aren't huffing it in. Using dry ice to ship perishables is a common practice and a neat science lesson. CO2 passes from solid to gaseous form at room temperature, without ever becoming liquid. Hence, it's nickname of dry ice. Frozen CO2 is very, very cold (negative109 deg F). It will give you frost bite if you touch it with your bare skin. Put it in a cooler and it will keep whatever is in it cold for hours depending how much you have. Look it up on wikipedia if you have other concerns. [/QUOTE]