Sue from Warren, Mi writes
What can I use to KILL the larve?
The Talstar and Bifen will only kill the adults as the larvae is protected in its egg form much like a chicken egg is protected until cracked. To control the larvae you would need to mix the NyGuard IGR(birth control) in with the Bifen or Talstar. NyGuard is labled for fungus gnats as well as a large variety of other insects to sterilize the adults from being able to lay viable larvae. This will control the population drastically in keeping new ones from developing. You should mix 1 ounce of Talstar/Bifen with 4 ml of NyGuard IGR to each gallon of water you use.
Answer last updated on: 09/15/2013