BP ingested Vermiculite, please help

[Bogertophis]

I've had to do safety inspections on buildings for vermiculite. Is it normal/typical to mix this with a substrate for any type of reptile? This is new to me. And a bit concerning.

This is the first I've ever heard of anyone using it mixed into substrate. I've used it for incubating snake eggs, but never in a snake's home. It's great for holding moisture, so their local reptile shop apparently got the bright idea...?

I have to ask...where does it turn up in buildings that you need to inspect for it?