So now I just saw 2 little black flies in my grow room. I am almost positive they are fungus gnats.
I have read a lot about getting rid of these guys. However a lot of what I read was speaking about gnatcontrol or other products.
I was wondering if a Neem Oil drench is a good fix to these bastards.
I hit the plants with a neem oil spray 3 days ago when i was invaded by 15 or so ants. Then two days after the first spray I saw two gnats.
How should I proceed.
Can anyone tell me the ratio to use in my Neem Oil drench? If neem oil can be used to fight the gnats.
Edit: I was reading about using potato slices to monitor the gnat larva in the medium. If I were to take action against these gnats. Is it best to do all the pots or only the ones I believe to be infected? I was thinking of using the potatos to find which pots actually have larva. However they say this could take up a to a week to start seeing larva in the potatoes.