Just got Diatomaceous Earth but there's 85% SO2 in it
This site talks about how if you have more than 3% free crystalline SO2, it is dangerous to humans.
On my bag it says there is 85% Silicon Dioxide content but doesn't specify how much free crystalline SO2 there is.
I'm worried that this stuff will not be safe and will be especially unsafe to breathe in. I got it from http://www.extremelygreen.com/index.cfm and it says it's safe for pets and humans but says not to breathe it in or get it in your eyes..Comments?