I say we take off and nuke the entire site from orbit. It's the only way to be sure.

Ripley's right, here. She's talking about a bug-infested colony in the middle of nowhere; where the climate is so terrible that you're better off in a hazmat suit. A place nobody wants to go, unless they're paid to. And even then, its not a place you want to stay.

Whose fan is in his hand, and he will throughly purge his floor, and gather his wheat into the garner; but he will burn up the chaff with unquenchable fire.

Matthew 3:12 (KJV) foresees all of this. You see, the chaff is Buffalo. And the unquenchable cleansing fire is what we should do about it. It's right there in the gospels. Can this get more clear?