I feed FT to my corn. Cause he was raised that way from the breeder i got em from. He doesnt constrict. Just eats it. Never had a problem.

Now my ball, she doesnt take FT. No matter what. So i feed live. Id rather her eat than her starve. If i could id probally feed Ft. Cause its gonna be hard to find a rat breeder. And its cheaper. But i watch her well, an make sure the mice are healthy so i dont worrie too much about it.