I just wanted to share that I have purchased 5 ball pythons in the last year and a half that were strictly on asf rats, which can be difficult to come by near me, or they are expensive. I got the snakes at a discount because they wouldn't touch rats or mice, they were asf only. Well 4 of them are no longer the picky asf eaters and have all taken at least 5 rats each! One girl has been on the rats for almost a year. The 5th snake is still off and on, he'll take asf some times and rats other times.