Home DIY

Hold on there, I said NA, as in N.A.
Canada.
I'll assume you're somewhere over there, where the vermiculite comes from places other than the Montana mine that was closed down.
Russia, South Africa, Brazil and China produce vermiculite these days - all have stellar safety records.
wups

If you're worried, the worst thing to do is remove it yourself or have someone else do it who is equally untrained in remediation. Most of the places where vermiculite ends up are generally undisturbed - attics, walls and so on. Best to leave it as long as its sealed in, unless you want to pay some serious cash to a pro.