I can honestly say that w/ out a doubt Aza-maz or Azatrol r the best things on the market. I have used
neem oil (no help), Dr. Doom bombs ie.
pyrethrin (no help). Just all a waste of money. Suck it up and spend $70 on a bottle of above products. It will last a LONG time and WILL kill those lil fuckers. You need to repeat in a week. It can be used til harvest. Then clean your room really good next time and do a preventive spraying on your next girls (at least twice.) Aza-max and Azatrol work by causing the mites to dry out. It will also inhibit their breeding and egg laying. Any that survive should be taken care of wi/ second spraying.
Of course if you r seeing webs you r in for an uphill battle. It is really important to constantly check for bugs so you can get on them early. Also be on attention when temps start to rise and humidity drops. This is their ideal reproduction time.
Good luck
I have never heard of using a 50/50 mix of ISO n water, but after thinking about it, it makes sense. It most likely is working on the same principal by drying out the little bastards. Might be a good cheap fix.