I found a live black snake on a basement steps during a mold inspection once. It made me jump back some because it was unexcepted. I glad i happened to look down at the time. He was only about a foot long.
It’s only one house!
Just wait 40 years; the radon will get them . . .
This looks like a job for the Swamp Brothers
I like the comment about raising mongoose(s?) there.