I 2nd try heating it up. also wiggle it around in front of the snake. I have read on some post that you can bump the snake on the side with the mouse to induce a strike, they say just stay away from the head. I have not had try this method and not sure if others would agree with it. I understand the frustration for a while there I had one snake on rat pups the other on mice, one would do F/T the other would not. now they both take rats, but still cant get one to take F/T so I started breading rats to keep them all happy.