My Ukki was an avid live-eater when I got him, refusing the mice I bought and killed FOR him, but if the mouse ran, he was all in to eat. I didn't have a local supplier for Frozen/Thawed mice where I lived (even travelled 20 minutes to get the live mice for him).

He had always been a live-eater-- the person I bought him from had him eating several live rat pups per week since she kept mostly redtails and he was the only ball python she had (and ultimately why she sold him.)

That said, the few times he did get bit, I was told by my vet to just put neosporin on him to promote healing (and he healed up very well, and I'm VERY thankful for that). It made me a nervous wreck to feed him and I eventually got to the point where I'd wait for him to strike the mouse, then I'd stick a ruler in for the mouse to bite JUST to be sure it didn't bite him. The happiest day for me was the day he, for whatever reason, switched himself over to Frozen/Thawed rats after I moved to Madison.