how do you kill your rats when feeding pre-killed?

I feed live mostly, but I do gas large rats partially to wobble them, it gives the snake a shot at killing it live but groggy.
I hate whacking rats, but to each his/her own.

I can't say this for everywhere, but around here a lot of our locally-owned pet shops will kill them for you, if you ask. That's the route I took when I had a red-tail boa, BIG live rodents and killing things are not my cup of tea.

YouTube - pre kill mouse, feed corn snake

i do this with my mice...

You can just put it in a pillow case and whack on the ground! That will kill it with one shot instantly!

awesome techniques everyone , i usually feed live adult mice ot my new 2009 mojave but this week he ate like 3 mice a week he's a crazy eater, but backt ot he subject now that he is eating bigger adult mice i have these piercing pliers i use that has two round circle to gript he rat with by the head and once the snake has struck and bit down i squeeze the pliers making a nice and fast skull crushing kill and safe :taz: oh yea baby:banana:

tall paul