I’m making a comic in which I’m recreating these posters, but with aliens, instead of rats.
Now, my first thought was xenocide, but that pretty much just means “genocide of an alien species” ever since Orson Scott Card's book where I think he created the word.
But rodenticide has -i- as a connector, not just -cide so could xenoicide or alienicide show what I’m trying to say?
My question is, which one of these words (or maybe ones I haven’t thought of) most appropriately conveys "alien poison" in one word?
Thanks for the help, guys.