FOOD

Corn snakes eat rodents, primarily rats and mice. The size of the food item is dependent upon the girth of the snake; it is not recommended you feed your corn snake anything bigger then the thickest part of its body. The food item should leave a noticable lump in the snake; if there is no lump then the prey item was too small. This is recommended for ALL snakes. If your snake is a hatchling it should be fed every 5-6 days, but as it gets older its not really needed to feed as much since their fat stores have built up during the year. Every 10-12 days is good feeding for an adult corn snake is what some herpetoculturists do while others feed once a week.

Frozen/thawed, live, or pre-killed? Everyone has their own way and their own opinion on what state the prey item should be when it is offered to the snake. Personally, I agree with a lot of other keepers: frozen rodents that are thawed before being fed to the snake is a better method. It is much easier and more cost effective, you can purchase a bunch of rats or mice, store them in the freezer and then you won't have to leave every week or so to feed your snake. Most importantly, it is safer for the snake; the frozen mouse isn't going to chew on your juvenile corn in defense.