Welcome!
What a cutie you have there.
Feeding live is OK if done responsibly.
You'll find that most of us here feed live.
And since you have little guys, feeding live baby rats should be no issue. They're harmless. Its the adult rats you have to keep an eye out for.
Try feeding live a few times and see if they'll eat if your husbandry is on oar. Once they become more consistent eaters, then try the f/t.
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