The way I thaw my f/t is run tap water as hot as it can, put rodent in leak proof bag, fill tub or pot with hot tap water, put rodent in leak proof bag in tub or pot, weight it down so the rodent stays under the water, thaw until no frozen or cool spots, take rodent and hair dryer and heat head of rodent while blowing smell into cage, offer while holding rodent with tongs. If you have an ir temp gun heat the head of rat up to 100 or a little more, if no temp gun heat head for a couple minutes. You can heat the body a bit but focus more on the head to give a good heat signature and a point of aim for the bp. Also make sure all lights are off, you should try to make it as dark as possible when feeding, getting a red bulb so you can see to feed is a good idea.
Yes I understand the cost of the snake but even if it was eating right away odds are it will go on a fast at some point and multiple times in its life. You need to be patient and getting one that doesn't eat from the get go is good practice. They say the reason a new snake won't eat it usually a husbandry issue. I would see if where you purchased would give you an extension do to feeding. Did you buy from a breeder or pet store? If you bought from a pet store I would see how long it took for them to get the snake to eat after they first received it. From a breeder that information won't help, usually they are in small secure tubs so moving to a bigger glass tank can be stressful alone, more clutter and dark secure hides can help with that such as the hides from reptile basics.
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