Look if u feed live. Say u put mouse in (20-30 mins tops) say it does start to bite the snake stick something in the mouth. pencil ur finger whatever this will put that to a end
If it goes to scratch it just hold the feet lol
Never leave it in more then 20-30 mins tho and when it takes it if u see anything go wrong just help the snake out.
I had a mouse start to scratch ours just held the feet. It messed up like 2-3 scales nothing big didnt hurt snake