I dont know what kind of bug it is but you can use liquid soap.Delude it in water.About one cap full to one gal of ph distilled water.Check the PH before and after adding the soap.I spray it on in the morrning cause I spray carbonated water on the leaves 3 times aday for the co2.Later I will get the co2 tank.But I uas the soap and it does find for me.