Right now I'm running 1.6 colonies I have experienced 1 baby being eaten. And that's it they're all doing good. I remove the male when the females are about to pop I have a bunch of baby mice born and only 1 baby being eaten. I feed hog grower from a local feed shop aswell as dog food ontop of the mesh... I also feed mealworms every now and then I started a colony of those just for my mice ( they're spoiled) and that ms about it try to offer them mealworms they're good in protein also remove the male good luck