Hey, you need to head to your local hydroponic store and pick up some NEMATODES. Most hydro stores have them, they are stored in the fridge because they are a living organism. What they do is, hangout in your soil and eat the eggs that are being laid by the bugs. It takes a few days to thin out the numbers because your killing off the incoming wave of bugs. Nematodes combined with yellow sticky traps should control your problem if not eliminate it.
Try and add them the day you get them. Mix them with non-chloro(or reg if you don't have access), p-Hed water.