Feeding live .... I wear a kevlar glove from menards (home improvement store) and grab the rat by the back of the neck. Using a wire cutter I clip the teeth. If you don't clip too much (no bleeding) and the snake does not take it, the teeth will grow out and the rat will be fine. Before anyone goes off on how cruel this method is , remember the rat is a food item. I have had zero issues with rat bits since using this method.

When feeding frozen, I thaw out the rats on a plastic grid that I salvaged from a ceiling florescent light. This way there is air movement around the entire rat. Things thaw out much faster. Then heat up slightly before feeding.