Ok, so i'm getting mice in aug. and my ag teacher said she had a cage for me to use . i just got it home its a wire cage. she said she used it for mice before in some of her classes. But i measured the wires and they're 1/2 inch spaces inbetween. i thought that mice needed as a max spacing of 1/4 inch so they wouldn't exscape. she says they never have but i wanted to check with you guys.