Add thumb for sulfur burner. Outside only. I have used this on outside crops and recently did my tent outside. When used on outside crops it leaves a residue on plants that zero bugs can stand. Great till the next rain.
Yes but it rinses off. brown to silver coating depending on disk or pebbles in the burner.
No they can be used safely indoor no need to burn outdoors just use the powder to dust plants I would never use any kind of sulfur on plants indoor but bombing rooms in-between grows is fine an safe to do.
Yes but its tuff to get the spray into tiny cracks where mites hide the burner will get into anything in the room lights an electronics must be removed before burning sulfur.