Mice are not breeding?

Set up my colony about a month ago and still no babies. Can anyone give me any tips on this. I have a 1.3 ratio with water and food and Aspen bedding.

Did you buy adults?

They could be too old or there could be a sterility issue.

Buy a new male put him with the females if it doesn't do the trick feed everyone off start from scratch again, it can take time to get started especially with mice.

Yea I bought adults. Ill try that and see if that will work.

I hear that mice stop producing if it gets too cold (don't quote me on that). What temps are the room that you keep them in?

I actually Have them outside with a beat lamp so it shouldn't get that cold they're in the laundry room so it shouldn't get that cold.

chuck the male and get a new one. just to be safe you can but a juvenile female just to make sure that the females arent too old too throw it in the mix wait a month and see what happens.

sorry you had to waste money, it sucks

It's also only been a month.