I started this thread, so I might as well finish it! I've been feeding the mice high quality dog food lately. No dyes or added fillers. And I've gotten great results with it. I usually get 15-19 babies. But......I have done a little experiment with the seed mix. I have two bowls of food. One is the dog food, the other is a seed mix. I started this a few weeks ago. The seed mix is hardly even touched, and I've had to fill up the dog food twice already. Maybe they just don't like this brand, or maybe its because they've been eating dog food for so long they don't really recognize the seed mix as food.