The reason to use fossilized diatoms instead of something synthesized is specifically so that you won't get silicosis from too much crystallized silica. But I

The reason to use fossilized diatoms instead of something synthesized is specifically so that you won't get silicosis from too much crystallized silica. But I agree, just sprinkling it liberally around your house as some kind of preventative measure sounds like way more exposure than I'd be comfortable with. https://en.wikipedia.org/wiki/Diatomaceous_earth#Safety_considerations https://en.wikipedia.org/wiki/Diatomaceous_earth#Safety_cons...