Most kingsnakes will readily accept frozen / thawed rodents as their food source. Ive never encountered a California king that wouldnt eat F/T rodents.Feeding Pink Mice to a Baby Corn Snake. Feeding Frozen and Thawed Mice or Rats to a Ball Python.
Brooks King Snake feeding guide, frozen thawed mouse for snake, king snake care tips, how to feed a king snake, feeding habits of king snakes, snake feeding techniques, reptile care essentials, maintaining a healthy snake diet, understanding snake feeding behaviors...
One method I use for very small snakes that are shy feeders is cup feeding.Add about an equal volume of water to the paste and freeze it again. Take the lizard slurry out of the freezer and thaw it out enough to dunk a pinkie in it. Try feeding with that pink

As we can see from the illustration, Thawed Frozen Mouse Feeding For King Snakes has many fascinating aspects to explore.
MiceDirect Frozen Mice Small Pinkie Feeder Snake Food for Corn Snakes Ball Pythons Lizards (.5-1 inch)(50 Count).
When feeding your California king snake, it's essential to provide a diet rich in protein from rodents. Mice are a popular choice, and they can be fed frozen, thawed, or live, but live prey can be hazardous to the snake by biting them. For captive snakes, a diet of mice or rats is recommended.

Feeding: King snakes typically eat thawed frozen mice.Adult king snakes may only need to be fed once a week or less and can be fed adult mice. Housing: King snakes should typically be kept in an aquarium that is at minimum 20 gallons, and they should always be housed alone.
Ideally, frozen/thawed is the way to feed a snake. They can be just as healthy and active. eurectes on : Snakes in wild eat live food, if you cant understand that you should't have snakes.
King snakes typically accept frozen-thawed prey easily but can be highly food driven, so theyre best fed separately. Boa constrictors are generally reliable eaters, but they may refuse food during breeding season.