Well, depends if killing the animal means having an actual ecosystem functioning again, afterwards. Some animals are living in the wrong place in the world; culling them requires special skills.

I get it - animal murdering is cruelty, mmkay .. but so is a wild boar, ripping up wombats and quokkas and witchetty grub-bearing paperbark trees ..

Anyway, I do see far more peaceful applications of this, if it becomes efficient and deployable. Could be a good way to launch things at sea, for example.

Or even certain forms of glider.