well how old is this bP?
most hatchlings wont eat prekilled or f/t.
but its not hard to get them to switch to f/t.
it just takes tuff love.
but its been my experience, my hatchlings wont eat PK or F/T .
but will make the switch to PK. easier than F/T.
like i said thats what i have experienced.
no harm in live mouse feedings. rats are more feirce than mice, so the risks are slightly lower
hope this helps your decision.