just turned over the soil on the top of my plants and i noticed alot of small speck flies flying out of the soil.i have been using safers end all 2 and grotech neem on the leaves and stems for 3 weeks and about 5 applications,but how do i get rid of the soil infested white flies.i want to flower them soon but i have to get this under control first.i guess i wont buy to promix there again because this is a new grow thats been sprayed and clean with bleach,so it not an enviromental issue.they had to be in the new bails of promix or ?thanks