When applying the Diatom Dust, is it necessary to wear a mask?
It is not necessary, but it is recommended. If you apply the dust with our hand duster, you can apply it in one of two ways. You can apply little pressure to the dust chamber and the dust will gently fall out of the duster or you can squeeze the chamber forcibly and the dust will plume out of the duster. We typically recommend applying gentle pressure and thus the dust will not get airborne. If the dust does get airborne it can cause dusty lung if you breathe it in without a mask.
