Yea, I used Safer Brand EDN-ALL Insect Killer. Sprayed it all over my roots and left it overnight, when I woke up the next day I rinsed the roots thoroughly and cleaned/replace the water in my reservoir. Seemed to work great, no adverse side effects. Good news is they don't hurt, either, so make sure you don't kill your plants trying to kill an insect that won't hurt anything. Still, I felt better when I got rid of them completely. Good luck with it, if you need any more advice don't hesitate to ask.