Also, while affordable access to spay/neuter is a powerful tool in combatting pet overpopulation, it has not been effective for eradication of feral cats. There *are* low cost options in most large communities in Alaska now and while it has reduced the numbers of animals dumped in shelters and shelter euthanasia rates, it has not had an impact on feral cat populations. The only communities that I know of that have been able to end their feral problem have been small, isolated communities that have (borderline illegally) practiced a version of TNR.