Unfortunately the direction in which it fled was into the crack between my house and the concrete step to the patio. I’m not sure if that lets out somewhere else or if it just got into my crawlspace. At any rate, I’ll probably be more careful letting the cats out and walking in my yard barefoot for the next couple weeks.
Besides the snake the only animal I’ve seen in my yard recently was a mouse that immediately ran through the crack to my neighbor’s yard when I saw it. I’m pretty sure that one didn’t stick around because the cats haven’t expressed any great interest in the area I found it in and I’ve specifically put them down where I thought they’d be able to smell it if there were something to smell.