With my juvie BPs, I have to wiggle the dead mouse until they snatch it and coil around it; otherwise, they won't eat it. I don't have to do anything for my juvie water pythons and kingsnake; I just put them in the other containers with the food already in there, and they go for it immediately. One of our older BPs prefers to be alone. We don't have to make the mouse dance or anything, but he's more tentative about eating than the others. Smulkin can tell you more about how the others eat, but my observation has been this: If the snake has never had anything but frozen/thawed food, they'll eat great for you everytime. If the snake is used to live prey, then you'll have to work a good bit harder to get it to eat frozen/thawed or prekilled.