I have used the ultimate wash and it did work. The difference is 217 a spray that kills on contact and the residual in the plant disrupts the life cycle of the mite.
209 is a systemic you put in water and water your plants with it. These are both made of rosemary oil. 209 makes the bugs leave cause they don't like the taste of rosemary.
The electrified water worked, but i personally which is only my opinion i like the sns products because of the residual affects/ effects, too stoned to remember the difference.
I would feel safe using the sns before harvest if you have 2-3 weeks. I can't remember if you have to repeat with the electrified water. I used it a couple years ago. I would feel safe with it too.