I've read the stickies on them and I've already got two groups of breeder mice in 2 ten gallons. [2 females, 1 male per cage] it's cleaned out weekly but man, I need to get them out of my room! They stink so bad. Does anyone have any good "blueprints" for a Breeder rack system? I can't spend a ton of money. Maybe $150. [not including the breeders] Could I make it like a snake rack and just use plastic tubs and have the "top" be tight enough so they can't escape with wire-mesh on the top for ventilation, or should I try something different. I have 2 40-gallon long, unused, snake cages with locking screen tops. Is that big enough for rat breeders? These breeders will be out in my storage room, where it's away from my room, but it's also a little cold in there. Should I use overhead heat, or could I use heating pads?