For those of my snakes that only eat live I have noticed the ASF's are WIMPS!

They dont do anything but sit there looking paranoid. I always watch and put the tip of the tongs in its mouth after the snakes grabs it if its a bad grab and the rats mouth is too close to the snakes body. Otherwise i have not had a problem. As long as they have not been dropped into the enclosure and are not "jumpy" when you place it in there, it probably wont move at all.

I have only had 1 so far that actually jumped away from the snake.

Norway rats and mice move everywhere and bite anything they come across. For some reason the ASF's seem scared frozen when they see the snake move.