They probably will crawl out of the bottom, but rats don't have good eyesight so by a rule they won't jump or drop down anywhere, because they literally cannot see where they're jumping to.
Nice cage. If you have spare cash, line the walls with a 6"-8" wide strip of aluminum flashing to prevent them chewing out.
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
NMGA miniature meat goats, Silver Fox and NZW Rabbits, Muscovy ducks, several breeds of chickens, fancy mice and rats in Michigan