Let me tell you, I had them in my crop with minimal damage. They managed to sever a few ends of a few colas but the severed ends were recovered and dried so all in all no real loss here. Now with that said, you can pick up pest sprays from your local hydro shop or even your common local super store that will work great (spray before your flowering stage). In my humble opinion the damage to my crops was such a minor, minor inconvience and found that just picking them off as I find them was satisfactory. Knowing that the product I medicate with was not treated with any kind of pesticide gives me a pleasant satisfaction. If your product that you grow kills small insects when they crawl on it, you got to ask your self would you want to ingest it? Hope this helps my friends.