F/T is more convenient if you breed your own rats. That way you don't have to worry about the rats growing to large for you snakes (I only have two.) Captain Hook will eat anything, F/T live pre-killed she don't care what it is. If I can get Ivan on F/T I will do them all this way, let them grow to a certain size then kill and freeze them. I may keep a few to sell to pay for food/bedding but F/T is more convenient if you breed your own unless you have a lot of snakes.