Debra from Lagrange, Ga writes,
Can thuricide concentrate be used as a drench to kill fungus gnat larve in house plants?
Thuricide concentrate is actually not labeled for fungus gnat larvae and so we are not sure of how effective it would be. However, we do sell a product called Talstar One which is what we have always recommended for fungus gnats and works great. You should also place your plants outside to dry out a little bit or cut down on how often you water them, if possible, and this will also decrease the fungus gnat reproduction cycle.
Answer last updated on: 12/22/2011