Also, some snakes are drawn to the rodent's rear presumably because there is more scent, so if you're holding that area with tongs, it can be counterproductive & cause the snake to shy away from eating. What I do to help snakes target the nose of f/t rodents is to pinch/damage the rodent's nose with my feeding tongs...that actually releases more scent so the snake is more likely to find the best & easiest way to swallow it.