neem oil is a great natural "non-toxic" insecticide that, when diluted and used with a few drops of natural soap (like dr. bronner's liquid eucalyptus oil soap) as a wetting agent, can help to eradicate pest populations (spider mites, aphids, thrips, etc.). since it is pretty mild stuff, you can spray your vegging plants (or flowering if an infestation is pretty bad) with it every ten days or so as preventative maintenance. I've had great success with it against thrips. good luck.