Have you had success with mosquito dunks, maybe even more than once? I've always found that using nukes to blow up a shanty always had bad results, but there is so much about biochemistry that I don't get. I'm one of them pussy farmers who lost some crops to too much Miracle Grow, and I'm skeptical of any heavy artillery. My plants do suffer in weight because of my hesitancy to nutes and pesticides, but I'll trust you if you know it works.
You tell me that it worked for you, and if the 3 in 1 I tried doesn't kill them, I'll try it next week.
Thanks for the advice. For such a hearty plant, Weed is as tricky as a toddler sometimes.

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"Only the unsophisticated continue to believe that cannabis leads to violence and crime. Indeed, instead of inciting criminal behavior, cannabis may tend to suppress it."-Substance Abuse, a Comprehensive Textbook,
Edited by Joyce Lowinson and Published by Lippincott Williams and Wilkins

i find that using 1 tblsp of regular lemon dish soap to 1 gallon of water, lightly misting leaf top and undersides, and the soil, weekly, or bi weekly (as maintenance) keeps perty much everything at bay for me, its never wilted or burned anything, hope this helps...

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Proven method: I had the gnat problem. Let your soil dry out, hard as a brick, til your leaves start to droop. Once that has happened, feed your plant a little water (1 to 2 quarts), come back 8 hours later, and add another quart. Wait for the plant to respond to this before you add additional water. The eggs will die from having no moisture. I can prove it was effective cuz today I took clones off one that really had the issue, found nothing in the soil whatsoever. Also, it has been my experience that they do not like the reflections from mylar, they get like REAL HOT n shit. (the adults) It's their eggs that feed off your roots, not them. Sticky traps for adults (though mine just simply disappeared. And dry that shit OUT! Trust me, easier than adding some stupid shit, and costs you nothing, shit, you even save water you don't use...... DO IT