Definitely try using a hair dryer. It's gets the scent of the rats really flowing and drives my snakes crazy! It helps to really get the rat nice and hot, to the temp of a live rat, so it tricks them into thinking it's aliveI had a pretty picky one too that was started on live at first by the breeder but I really had to wait him out because it took a couple months to get him eating f/t rats consistently. Just be persistent and once they get hungry enough they should take it.
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