This will always be a hugely emotive subject, whilst cat lovers are blinded by their love for their pets to the massive damage that even a single cat can do to it's local environment, saying things like "Oh little Flossie wouldn't do such a thing" as if they can see inside their cat's mind.....
They refuse to get their cat desexed "because it's cruel", instead they are happy to cover their eyes and ears when the damage to the local wildlife is mentioned.
It seems that shooting is the approved method, and there is a very detailed guide here:
http://www.feral.org.au/wp-content/u...ooting_web.pdf
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