Can anyone help, (pic of critter too)

I have a prop with a number if rooted cuttings in (root riot cubes), and i noticed a tiny brown bug running around the cubes, not loads just see the odd 1 dotted about but i assume they all have 1 or 2 inside the cubes, I got this stuff that kills spider mites (its quite oily and u mix with water) but it does not kill these things.
Last night i bleached my prop out, bleached the cube trays, then dipped each cube in the solution and squeezed out the excess, and it still didnt kill these little bastards, any advice on what to use much appreciated!!
I got 1 of the bugs on white paper and stuck some sticky tape over it to take the photo, its at about 200x magnification thru a microscope.

1 last thing, I suspect the last batch may have them in, i saw them before repotting once but i never saw them again so i hoped they had gone, the last batch r 4 weeks in flower and look really good apart from 1 thing, they r very small for the time they have been vegged, and only grew a little bit when put on 12/12, so do these bugs chomp on the roots?

Any ideas very welcome!!!

That looks like a mite.

They drill little holes in your leaves and buds until eternal death.

Keep thise seedling the fuck away from you ladys and keep an eye on everything.

Think that's spider mite check the underside of your leaves for them what is in the veg room will be in the flower room to av just found some sort of little bstard's in my garden mine seem to leave a silver shine on the leaves an the odd pale spot you may have the spots to coz they drink the fluid from the leaves. Av just orderd pest off to c wat I can do think I have thrips little see threw things on top of leaves with little black dots looks as if it's shittin all over the place. In your case look under leaves and in between nodes for little webs if they are spider mites they may have grown amuion to you treatment that's my bit mate hope it helps peace out.

How do they even get in the grow room to start with? Do they hitch a ride on flying insects or summat?

freerider said:

How do they even get in the grow room to start with? Do they hitch a ride on flying insects or summat?

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it does seem like a young spidermite, 8 legs, spot on each side, ect... you can personaly bring them in to your grow room on your clothes and shoes ect, or the soil you brought from the garden centre was the cheap stuff, it is best to buy hydroponic soil or steralised soil. try a product called nitenite spidermite, it can even be used the day before harvest

I have been using coco to grow in so it prob won't be that, I will keep treating with the stuff I already bought, it does say on the bottle repeat applications may be necassary, it's annoying these little fuckers gettin a free meal at my expense

freerider said:

I have been using coco to grow in so it prob won't be that, I will keep treating with the stuff I already bought, it does say on the bottle repeat applications may be necassary, it's annoying these little fuckers gettin a free meal at my expense

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Yea i bet more bot has been destroyed by those than the dumb DEA lol.