That's an aspirational goal but there has been no practical methods proposed to actually achieve it. Good intentions are a start I suppose. I don't think anyone really thinks we can do it at this stage. It's openly stated that it would require as-yet unknown technology to achieve.
e.g. We could engineer something to kill possums, but the Aussies are gonna be straight up pissed at us for wiping out their marsupials, if (when) it crosses the ditch.
That's an aspirational goal but there has been no practical methods proposed to actually achieve it.
I would bet that it could be done. It might not be cheap or easy, but I bet that it could be done.
What I am more dubious about is whether:
It can be done at the kind of cost that is considered acceptable by the public. I don't see budget numbers in the article.
It could be done without wiping out other species. One small mammal is much like another small mammal to, say, a poison (which the article is talking about them using today). If you want to wipe out rats without wiping out something else, you're gonna need a pretty darn selective method of killing.
Rats can be kept out once killed off in New Zealand. Rats are pretty much everywhere, and they got there because they're pretty good at hitching rides. I can believe that they might keep them off a small island with little shipping traffic, but the main islands receiving shipments from around the world?
All we have to do is convince "alternative medicine" practitioners that rat tails from NZ cure baldness and make your dick grow. They'll be as extinct as the white rhino in less than a decade.
Nice theory, but when populations start to run low I guarantee these fuckers will just reintroduce them. We’re not talking about people with a lot of scruples here.
Unfortunately Alberta started out with the very large advantage of not actually having them, they haven't eradicated them they've just kept them out of the province. Still an impressive and challenging feat but easier than eliminating an established population
That’s the kind of goal that politicians love to set so they can blow a lot of hot air without ever having to worry about delivering.
Also rats aren’t our only introduced pest. Possums, cats, stoats, dogs, deer, pigs, goats and more. They’ll be harder to get rid of, especially with selfish idiots deliberately reintroducing them so they can keep hunting. Yes, it happens.