VectoBac 600L Biological Larvicide. Fungus gnat larvae don’t stand a chance.

VectoBac 600L is a highly selective, biological larvicide for use in greenhouses to control fungus gnat larvae. It may be used on a wide variety of ornamentals, as well as bedding plants and vegetable sets. Once the larvae have ingested VectoBac, they become paralyzed, stop feeding immediately and die—usually within 24 hours.