[Raw710]

Hi I am wondering if I can get some good insight from you veteran growers if bleach will kill fungus gnat larvae and if so what is the application? Thank you

[troutman]

Bleach sounds harsh.

Hydrogen peroxide works nicely and I have tried this.

How to get rid of soil fungus gnats the right way?

Once the soil is dry, mix 1 part hydrogen peroxide (H2O2) solution with 4 parts water.
Use 3% solution, which you can find in any drug store or in the hygiene/medicine aisle
of a chain grocery store.

From here:

https://www.howtogetridofgnat.com/20...secticide.html

[Raw710]

Originally Posted by troutman

Bleach sounds harsh.

Hydrogen peroxide works nicely and I have tried this.
From here:

https://www.howtogetridofgnat.com/20...secticide.html

I don’t feel like h202 kills the larvae

[troutman]

Originally Posted by Raw710

I don’t feel like h202 kills the larvae

It does.

[SnickleFrits]

H202 will def kill everything along with your bennies. Just did it to kill springtails

[Raw710]

Originally Posted by SnickleFrits

H202 will def kill everything along with your bennies. Just did it to kill springtails

At what application rate?

[Raw710]

For 35% h202

[kingCA]

I'd recommend mosquito dunks or something with BTi. Super easy and works well.

I've found compost teas to work well at nuking gnats as well, but isn't as much a permanent solution.

[troutman]

Originally Posted by Raw710

For 35% h202

Don't use it at 35% strength or you'll fry your plants

I listed the way to dilute it in post #2 of this thread.

Just use enough until it comes out the bottom of the pots.

[Mikell]

Desert Hydro gave the concentration in your other thread.