Usually, I will "dangle" the f/t rat in front of my snakes, and they'll strike and constrict and then eat it. I think that this week when I feed, I'll try just placing the rat in there and seeing if they will/won't just come up to it, flick their tongue, and eat it like that? Seems like they expend a LOT of energy constricting something that's already dead, for no reason at all. We'll see...