I know this might sound weird but my normal when it was a baby i had trouble feeding. The guy at the store told me to take some bedding home from the gerbil cage and put the mouse in the bedding for a little bit and then try feeding the mouse to the snake and it worked. I guess that gerbils smell similar to the soft fur rats that bps eat in the wild.. Also freezing a mouse does change the scent because it makes the cells expand and burst. None of my bps will touch a frozen thawed rat, they all eat fresh pre-killed rats.