Dunks contain a form of BT, I can tell you that when dunks are watered into soil, they will kill off fungas gnat larvae in the soil. Some people amend their soil in the beginning to keep fungas gnats from becoming an issue - Something I learned here from JM and Kindred Spirit.
Bti is a bacteria that controls mosquito and black flies in their larval filter feeding stage of development. The larvae die after consuming the bacteria that causes a disease specific to them but are harmless to all other forms of wildlife.
You need to ID the bug, if possible grab a microscope and look - I prefer something with 30-60x magnification. Rogue Hydroponics dot net has the one Ive got, it is like $15 bucks free shipping. Works great.
Small white bugs everywhere, could be spider mites, look at the top of the leaf and see if you got little speckling, like little white dots, Mite damage can look like what you've got- after they damage the leaves enough they will fall off easy after curling up, yellowing, kind of crispy like.
Mites come in a couple varieties, google image spider mites to see what they look like- I had the Two Spotted Mite. They have the ability to kind of hibernate for months, and being so small they are a B*tch to get rid of.
The best thing I have learned (thanks to the AFN) against any pest , crawling or flying is prevention. Just take care of what you are spraying on the plant, as you will be smoking it, there is a ton of info out there about treatments and cures, you have to find what works for you and stick with it.
I had to battle them and It takes perseverance - they are not easy to rid. The best thing is ongoing prevention and a plan so they cannot get a foothold. Look up Caliclean. It is a recipe posted by Calibuzz. I used it exactly as described and made it through the grow without serious problems developing - if what you have are spider mites it takes discipline and perseverance. Also try looking up Neem and how to mix/apply. I used Neem and Caliclean all through veg state and I didn't see them around. I hate mites with a passion..
I truly wish you the best of luck my friend. Hope to hear from you -
ps- I wouldn't suggest using neem on any flowers, maybe past like 2-3 weeks of flowering. I have heard that the taste can stay with it if you use it too late in flower. Caliclean can be used anytime. Plus, like Calibuzz said your money supports a farmer not a big fat f*ck corporation making a killing off your hard earned $$$-
Blackbriar
This smiley is for you little bugs... So I have seen stuff about misquito dunks do they kill all bugs?
