What...from cedar trees?....That's one I truly would have never even suspected. What about the acidity? Would it f#*k up the microherd? I'll have to research that one for sure. Wow,....who'd a thunk it?!I am surprised no one has said gognats! it is organic, mostly cedar tree oil. The gnats will be gone for a loooooong time after a couple applications. smells good too lol.