Really depends on the situation. If it's a younger female that has cycled a few times with a proven male and isn't "catching" then I'm likely to feed her off or sell her off to a friend with a large snake as prey. If it's an older female that produced for me well all her breeding life, her reward is a retirement here until she naturally passes (they have "jobs" in the rat colony until their death). Those long term breeders do get names. If it's a female that has produced but for no good reason either kills her litter or refuses to mother them, that one would be fed off as well. If it's a female that shows a tendency to be very nasty tempered, that one becomes an f/t feeder (I won't feed overly aggressive live rats to any snake).