just feed them the way you normally do mate, i don't believe any of this feed them the night before, feed them a little in the morning, special foods before you put them in the box, If a ferret comes into contact with a rabbit that wont budge it's going to kill it whether it has a full stomach or not. Remember ferrets have a very very short digestive tract and they will only eat a little bit at a time and when they want to, the food doesn't stay inside them very long before it is pooped out. just get out with them give them a few tit bits during the day (fresh rabbit livers) and don't forget a