I put mine in tupperware and let them thaw for 4-5 hours. Then, I put them on a heating pad on LOW temp for about 30 minutes so the snakes can see them. Most of my BP's will hit the rat after that, but my pickier ones need the rat to go on MED/HIGH for 10 minutes or so to really give it a good heat signature.

I am working on an industrial sized warming device (30 small-med rats simultaneously) to give the rats the proper head-tail heat gradient. It's gonna be sweet, I'll keep everyone posted

JonV