The bottom line, bugs are something to be dealt with unless you've got a setup whereas you can keep it completely sterile w/proper ventilation/filtering of air and a clean room going in/out of it. There's simply no other way to remain bug free, otherwise, you just need to take them head on, and stay on top of things. If your in an older dwelling, it's just that much worse. I've used every remedy known to man, I've got a dozen different strategies, and nothing quite works as well as staying on top of it daily and just grinding though it, Washing, mixing up the treatments, (never use the same thing twice) using beneficial predators, ect...
I've stopped using harsh treatments, because they don't work effectively. Dr Bonners Peppermint castile soap is my mainstay, with a little canola oil.
Mighty wash and a vacume cleaner during flowering, if it's terrible. Usually late summertime is the worst.
Coming here to the fourms really helped me in a big way, because my eyesight isn't what it used to be, and the stippling is much more apparent on an cellphone picture, than you'll ever see in real person. Catching them in the early stages, and keeping it in check is the overall best strategy for me, as I know I'm never going to get rid of these entirely.
Even if I do, they can easily come back, because I ventilate the house and always have a fan in the window. So without "filtered" air flow, it's virtually impossible.