Oh foreal? Well i honestly didnt kno pest like any soil i thought it dependex on the bug lol. I thot that the larvae had the black head on them? A bit ago i cut some patatoes up and put them in there, the bugs where attracted to it but when i flipped them over to throw out the wedges i dont believe i saw any black head larvaes. Also theyre not spidr mites forsure then caus there is no real noticable damage, leaves r green n sittn prety nicely