Most effective and cleanest way to defrost feeders

[Zombie]

How long can frozen rats be stored in the freezer without starting to go bad? Just want to check before I go stock up later, because I don't know if they come in singles or packs at Petco.

Rodentpro says 9mos. But I imagine its how they are packaged. Vacuum sealed will obviously last longer than a rat in a plastic bag, ya know? I think the frozens from PETCO have a use by date, but I could be wrong...

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