I started breeding mice in January of this year. I wanted to be able to have live pinkies for stubborn hatchlings. I bought 1.4 mice and 4 aquariums. I then decided why not produce enough so I don't have to buy any. I then decided why not sell some. So the racks were built and I couldn't even tell you how many I have produced, I know it is well over a thousand though. I am producing over 400 a month for sure.
Here is one of the racks, it has a lot more tubs in it then what you can see.
I figured I might as well raise rats also.
It's hard to see but there is about 40 rat pinkies in this pile.