So, it turns out that when you're buying a couple hundred live feeders at a time, you quickly find the need to go vertical. Thanks to Tim Bailey for the great walkthrough, Rich at RB for getting the watering supplies to us in no time flat, and the people at Fresh Step for shipping their cat litter in buckets with flat sides.

We've still got a couple maternity wards in larger sterilite tubs, but this condo can house a couple hundred modern-living young rodents, and if domestic disputes erupt, Tim (the garbage disposal) is on the other side of the glass door in the background