For the cat lover list.
It took John Read seven years to develop his traps and he has switched on the first one in a nature reserve in south-west Queensland. Photograph: Michael Slezak for the Guardian
This is a big problem in New Zealand too.
Look for future generations of very tal and very short feral cats.
If the cats are a big a problem as they say, a few hundred Ruger 10/22 rifles, and a boatload of ammunition will produce a huge number of dead cats. If that doesn't work fast enough, add in a bounty and there will be too many dead cats to properly dispose.
I was on a hunting lease in south Texas about 10 years ago. We had feral cats there and you could have put one in a locked room with a pitbull and it would have killed and eaten the Pitbull