Fungus Gnats & Mosquito Bits® Fungus Gnats& Mosquito Bits® HomeFungus Gnats Did You Know That You can Use Mosquito Bits® to Control Fungus Gnats? The active ingredient in Mosquito Bits® is a biological larvacide called BTI (Bacillus thuringiensis subspecies israelensis). BTI is a naturally occurring bacterium that’s deadly to both mosquito larvae and fungus gnat … Continue reading Fungus Gnats