Planned extinction: Is it ethical to deliberately wipe out a species?

[ReimTime]

And since I was so Conservative in my previous post.........
In a perfect world, I'd like to wipe out all the invasive species from the habitats we have introduced them to, that they aren't supposed to be in. No more Killer Bees threatening honeybee populations, no more of those Zebra Mussels choking up lake ecosystems, no more shitty invasive weeds etc.
It is possible. Alberta for example is rat free. We fucked their shit up and we have a rat patrol to fuck up any future wiseguys.