Powdered desiccant? Wtf r u talking about? Might wash is a liquid pyrethrin, neem oil is just that, an oil. Sulfur is not a powdered desecant either, its sulfur, when used in a burner it becomes a vapor that coats your plants, which they will eventually absorb as a nutrient, because sulfur is a nutrient and its essential to the health of plants. Growers of all types or greenhouse plants have burned sulfur for decades.
If u actually read what I wrote u would see that I said 'after u harvest bomb the room.'
Never did i suggest bombing a room with plants in it.
R u drunk or high?