Vermiculite is a naturally occurring mineral that is extracted from soil.
Before closing in 1990, a mine in Libby, Montana produced most of the vermiculite used in building insulation and as a soil conditioner. Tragically, the mine was also a source of naturally occurring asbestos fibers. In 1999 the mine was identified as a US EPA Superfund site and continues to undergo remediation today. We do not use any vermiculate from this site.
All of the vermiculite in our products is mined in South Carolina. Our suppliers use stringent testing to identify contaminants such as asbestos. You can be assured that a consistent and safe supply of vermiculite is used in our scented sachets.