there are definitely some crawling black insects in the soil.
Spider mites are white? so these are fungus gnats?!!

any reviews on these products? will they help me?
'Gnat Off' apparently you can mix in with the water you feed the plants with. The bacteria kills the larvae it says.
'Spray Safe' apparently kills spider mites in 5 seconds. will this work on my problem?

can i 'forteg p' bomb my cupboard with the plants inside it? if i need to move the plants from the cupboard, how soon before i can put them back in? can i leave them in the same room and just bomb the cupboard (i.e. 1metre away?)

'Nil nat' ?

I am 3.5 weeks into flower and have solid buds and pistils so i don't want to harm them...