No, I believe that frozen/thawed is the best because of the chance for injuries and/or parasites. Both my ball pythons and my kingsnakes have been feeding well on frozen prey. You should try to always feed thawed frozen mice. :Is feeding pre-killed mice to your snake overrated? Everyone recommends it cause it's safer for your snake. But in the wild, snakes don't get their meals all pre-served for them. They have to earn them, and kingsnakes often deal with prey much more dangerous then mice. Is feeding a live mouse every so often really that harmful?