We feed live, and we feed on the smaller side of what the snake can eat. And nothing bigger than a small rat if it is live. That way the snake can kill it quickly. Also, a small rat is a young rat, usually 4-6 weeks old. At that age, they are pretty docile. And rat fuzzies/pups are pretty darn harmless.
That being said, if you are concerned about mass produced food, you probably need to raise your own rodents. Live feeders are no less mass produced than frozen ones.
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