* Frozen Rodents: This is the most straightforward and accurate term.
* Frozen Prey: This is a more general term if you're talking about them as food for reptiles or other animals.
* Frozen Mice/Rats: This is more specific if you're talking about a particular type of rodent.
* Frozen Snacks: This is a playful term, and might be used by someone who keeps a pet that eats rodents.
The best way to describe them depends on the situation.