Astro continued to explain diligently, "Mind you, it can escape control. It is possible, but it will have to die. That's the best it can do by our reasonable estimates. But it is possible for it to escape, and it doesn't need to escape to wreak havoc on your world."
"There is also the more benign case of the blood tick. We don't want to be blamed if it causes the extinction of dogs in this world, as blood ticks like to feed on dogs."
"These situations can happen with human slaves too, but it will be humans damaging the human world. Humans have that right. But other races are not allowed to interfere in the affairs of Earth-11."
"This rule is why non-human races haven't taken over the humans in this world and controlled them en masse. It is why we don't acquire our human products ourselves. We buy them from other humans. Those humans get paid and also sign a waiver freeing us from any responsibility for any repercussions for how they were procured."