I just dont have the room or the tolerance for the smell of rats because lets be hoenst..they stink lol. I have had mice before for 2 weeks in the same tank and nothing so i fed them off like a dummy. I want to breed my own mice though.. So this will be my second attempt. What should i do and how do you get optimal breeding for mice? ( ill try rats when i move out and get a bigger place ) last week i spent 30 bucks on feeders. I cant do this every week. So can everyone that breeds their own mice tell me what to do? I have an empty 20 long with a stainless steal heavy top. how many mice should i by..what sex..how to take care of them and breed them? any help will be VERY loved.. please D: when i get them from the pet store they are pretty small.i saw give or take 4-5 inches including tails. i pay a buck fifty for each one.