Those look like fungus gnats, but yeah for mites and gnats, I use Sevindust. I don't use it during flower obviously. It's kickass on mites.
A Japanese maple from the nursery infested my whole grow with mites. $5 worth of Sevindust cleared it up in a couple days.
I also recommend yellow sticky mats for gnats, they bee-line for the yellow.
Fungus gnats are basically benign. It's the fungus you gotta worry about.
I poof Sevindust all over them like old timey prison movies when they delouse you, and throw a handful of white powder at your face.
***I actually "poof" it on, it's a very light coat. I don't SHAKE it on.... I poof it on.. right at the new growth areas.
Carbaryl is arguably safe during veg, I wouldn't wanna smoke anything that's been near carbaryl in the last 60 days. Supposedly it has a half life of 4 days in water and or daylight, 60 days in dry open air.
Not a neurotoxin to my knowledge, but more of a lung issue. Be careful with pesticides.
^^on a positive note, Sevindust is way less stressful than a Neem foliar spray in my experience, also it's not taken up into the plant.
Don't 100% blame your new clone. Sometimes your workplace or home is the real source of infestation. A couple years ago my favorite frisbee course smelled musty all year.... Since I was having bud rot, I decided to not play frisbee for a whole year.
^^If your next door neighbor has unhealthy rose bushes, their mites could be killing your grow.
I don't miss growing in a moldy old house surrounded by woods. I used to bleach it floor to ceiling about every two weeks... With a fucking tank sprayer and goggles.