mighty wash, like the dude said, one thorough application and no more bugs. one follow up just in case. I use it on spider mites as regular maintenance. and as where if I look hard enough I'll probably find a survivor or two the most you can really settle for (here anyway) is extreme control and mighty wash will do this for 40 bux a month or so depending on how big your grow is.
who ever told you one application and no more bugs fucking LIED to you