Sulfur I avoid at any cost it has an aftertaste that can't be avoided, if you have PM then simply improve venting and reduce watering check, your Rh% daily good luck
only burn it after you harvest . Burn it to kill any bugs or mold spores . Never with plants . Well a grower could if the plant was in veg with an bug issue . But it would not stop mites eggs will hatch up to 14 days after you kill the mommy .