Can i keep dry ice in a regular freezer?

titile

I tried to stick leftover dry ice in mine and it didn't last very long... :(

Nope.

It's like putting ice cream in the fridge..just isn't' cold enough.

From wikipedia:

"CO2 changes from a solid to a gas at −78.5 °C (−109.3 °F) with no intervening liquid form"

If your freezer gets that cold(which it doesn't), yeah it'd work, otherwise your dry ice will "melt".

*sublime

If something goes from solid to gas without going through a liquid state it is undergoing sublimation.

not something you want to beath as it sublimes