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I just wanted to add on the DE -
DE is obtained from deposits of diatomite which are the fossilized sedimentary layers of tiny phytoplankton called diatoms. DE is a form of
amorphous silica that can kill insects by desiccation, by absorbing the oily or waxy cuticle
layer by direct contact. When the thin, waterproof layer is lost, the insect looses water
and dies. In addition to its desiccant action, DE works abrasively to rupture insect
cuticles.
Dusting with DE is also a alternative for Northern
Fowl Mites in which their life cycle is 5-7 days, so repeated treatments may be necessary to eliminate a
large infestation.