How to get rid of most terrarium pests with dry ice

I came across this clever idea online a few years ago. Basically, rather than spending hours and large amounts of money breaking down, sterilizing and replacing your terrarium, just move all the animals you want to stay alive to a holding tank and drop some dry ice in the contaminated tank.

Because mites (and all other animal and fungal pests) require oxygen, and because CO2 is heavier than air, the CO2 will displace all of the oxygenated air in the tank, causing everything inside to suffocate (except plants).

You should be able to find dry ice locally (I know some Super Wal-Marts sell it). Just remove your frog, put the dry ice in a bowl of water in the tank, let it fill with CO2, then seal it off and wait a while. Bingo, all the mites are dead.

Caveat - I haven't tried this myself, I've never had bug problems in tanks that weren't simple to deal with.