Young girl is on rat pinkies and the dude is on weaned rats. I got some opinions from very professional feeder suppliers to size their prey appropriately. Right now I aim for 1x week but the new girl turned down the first 2 and i did like you do, let him take the scraps. He crushed the pinkies so no waste at least. I might try feeding every 5 days or so if it is safe for a young growing snake.