Can i use this in a inclosed greenhouse? I will apply it when i cover and its blacked out of course. I recently pulled outdoor plants and brought them in a light dep GH due to pre flowering outdoors, the plants that were in the GH already are 3 weeks today into bloom. The plants outside had whiteflies and im sure a few other type of bugs. I will also probly have to burn sulfur in a week or 2 in the GH, will it burn my plants? ive heard spraying/fogging plants and burning sulfur you should wait 20+ days in between? The sulfur is just to use as a preventive there is no powder mildew present for the time being... Thanks