Here's what I do when fungus gnats become too numerous. I spray pyrthrins in my room twice a day. That will reduce them. To elimnate them I add 30ml of pyrthrin concentrate to each gallon of solution and water plants well. I do this every 6 days for 5 applications. That pretty much covers the life cycle of the little buggers. Where I live fungus gnats are a fact of life. They will always come back. I mostly just manage them with the aerosol spray using the other method when they start to get out of control.
grey1223 Reviewed by grey1223 on . pest help needed asap I have these little dark colored bugs which fly around my girls and they seem to like being around the soil and water the most. I killed as many as i could by hand but each day more and more show. Its like they are coming from the soil man. Is there anything i can use to put on the plants / soil that will kill the bugs and keep them away but without putting any harmful pesticides or chemicals in to the plant? Last thing i want too do is smoke my harvest when its been treated with nasty Rating: 5