Yes. I talked to one of their techs in my quest for more knowledge. He said one of the real powers comes from using it as a soil drench. Many things are hiding in the soil sometimes: eggs, fungus gnats, mealy bugs. If you have mealy bugs, most are in the soil. If you see fungus gnats the ones doing the damage are in the soil snaking on roots. IMO, it does not have to be sprayed that often. They recommend for a severe infestation - once every 3-5 days. For regular pest issues - once every 5-7 days. as a preventative - once every 3 weeks. Gene