I need help with breeding rats at a steady flow. i have 2 racks with 6 cement tubs each, i jest need help on how should i breed them so that i will have a steady flow of rats. i have found a few ppl that want to buy them, but the first person baught all my rats i had ready. so i need to breed as meay as i can with the 12 tubs i have an at a steady flow. what would be the best way to do this?