>>12196387it depends on the type and methods used, but in general I would say it is unethical but necessary and effective
It's the same situation with snib snabbing feral cats or other pets, on the one hand I think removing their ability to fulfill the most basic drive of all life without their consent is absolutely unethical, but on the other hand it's completely necessary. The alternative of leaving them free to reproduce benefits them in the short term, but in the long term it results in much more suffering as the population expands beyond what the environment can support and damages other species until starvation reduces the population to whatever the new ecosystem can support.
You could argue that that's just the natural course of things and everything should just be left to work out however it works out, but in my opinion problems that result from humans or human activity should be dealt with by humans to minimize the impact on the rest of the biosphere as much as possible. I don't think we should interfere with wild organisms causing damage to other wild organisms, but that humans or other organisms causing damages as a result of human activity should be cleaned up by humans.