Quote Originally Posted by AK907 View Post
How big is your ball? I'm assuming its still quite small if you're feeding it mice. If you are worried about safety offer your ball get some rat fuzzies/pups. They are about the size of adult mice and will generally be less of a threat to your ball, not to mention rats are more nutritious than mice and making the switch to rats is a lot easier when they are young versus trying to switch an adult mouser.
On that note, it's also fairly easy to switch them to frozen/thawed prey at a young age.