Think about the investment you have in your snake, hundreds of dollars maybe more. Add the love and care that you give to your snake.
Then put that snake in with a live rat, sooner or later you will not be quick enough and the snake will pay the price.
We have all heard the horror stories of what can happen and it's sad every time.
I have never heard of that happening with f/t.
I would rather throw out a hundred rats than one snake.
Just my .02 cents