I can tell you that Diatomous earth is good to use as a barrier.It will kill all those crawling pest.Be careful,though don't be putin out in the wind.small circle around the base of each plant.When ya plant outdoors.I'd never use it on an indoor grow! The fans dry it out.It put you in harms way! Long term affects!Not recommended for the beginner.Use pyrithirum.I think that's how ya spell it.Don't be testing no bud while you have the plants sprayed.

Ga Grown

Is it the granules or the spray? I recommend the granules! That way you have not compromised your health first and foremost,nor the plants!