One thing I didn't think too much about when I made our colony plan was cleaning. Our rabbits are currently in hanging cages so not counting the flies, maintenance is very easy. If I build a colony on the ground (no solid floor, just buried wire), what would cleaning consist of? I figure it will be more than hanging cages. But I also figure that they will be able to regulate their temperature better so day-to-day maintenance to keep them from over heating will be less. ...so maybe it will balance out and a colony won't be more work?