I'm in the final cooking process of building an organic soil for my next grow. I discovered from another site the claim that using crab meal and neem seed meal in the soil mix eliminates thrips, aphids and fungus gnats from your grow. Both are now in my new container mix so we will see if it really makes a difference. I'm not sure I'll actually notice a difference though. I've been fortunate enough to never really had issues with any of these. I like taking the preventative approach over that act now or my plants will die approach.
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