“What could possibly go wrong? ;-)”
How many indigenous carnivorous species inhabit Australia besides dingoes and drop bears?
Crocs and sharks excluded.
Long but very interesting article on “1080” here:
https://en.wikipedia.org/wiki/Sodium_fluoroacetate
Apparently, Sodium_fluoroacetate is somewhat invasive species selective, and its use generally benefits the native Australian animals.
That said, I really do wonder whether native predators can control the rats and mice.
Living in a rural area, we have been adopted by various stray cats over the years, sometimes more quickly than others! A few were too feral to ever get close to us — invariably they eventually disappear. Several became very sweet and beloved pets. Overall they are beneficial, tho’ I wish there was some way to deter them from eating the insect eaters (birds, lizards, and frogs)! OTOH, some of the cats have even been fairly effective against moles. Interestingly, none have bothered my daughter’s pet / free range chickens - granted we have an Amberlink rooster with his spurs left to grow, and any but the most desperate cat would be a damn fool to tangle with that rooster. (That said, a ‘possum or especially a raccoon has the opposite effect: The rooster runs and a hen becomes potential dinner for the invader. It took a stronger henhouse and door latching - actually a real lock - the ‘coons can’t learn to open, to minimize those problems.)
If they stick around we get the cats neutered - which we need to do with the big orange tom who has finally really cozied up to us now: The problem is his marking of everything he wants to claim!
Anyway, back on topic, it looks to me like the conservation agencies in Australia and NZ actually DO know what they are doing. Like I said, that Wikipedia article covers it well.