On the topic of "cold" and rodents, especially mice, I never worry about the low temp, as long as it isn't below freezing for long.
i also heard that if it is too cool then the mice wont breed??? or not to the same extent, is this true?
I didn't say they were kept badly. I said the cages were cramped and dirty for my taste, which they are. I prefer to give my mice more space and cleaner bedding. That's my personal choice, and I don't appreciate being crucified for it.