---
title: "HELP. How to get rid of fungus gnats? I tried EVERYTHING"
description: "HELP. How to get rid of fungus gnats? I tried EVERYTHING"
url: "https://getplanta.com/community/lKxUkhzRR_aIJD7o1QvtwQ/y8NB97FM0wy6P4mSaKuXYJ?language=it"
community: "Pests, diseases and problems"
author: "Geo"
published: "2025-05-13T00:13:47.211599Z"
language: "en"
image: "https://images.getplanta.com/v2/cloudinary/global_data/communities/pestsDiseasesAndProblems.jpg"
---

[Community](https://getplanta.com/community.md?language=it) / [Pests, diseases and problems](https://getplanta.com/community/lKxUkhzRR_aIJD7o1QvtwQ.md?language=it)

# HELP. How to get rid of fungus gnats? I tried EVERYTHING

_Pubblicato da Geo il 2025-05-13_

HELP. How to get rid of fungus gnats? I tried EVERYTHING

## 22 commenti

### Springvision ha commentato il 2025-05-13

Other than mosquito bits, the only other thing that worked for me was taking the plant out of the pot getting all the soil off washing the plant really well and planting in all new soil. That took care of it... for a while anyway. 🫤 They are precocious little buggers.

#### exitJiraffe ha risposto il 2025-05-13

I second this. Repotting with fresh soil and sticky traps to get rid of any lingering stuff. I’ve also sprayed roots with hydrogen peroxide before repotting, but that can be a little risky.

The only 100% effective method I’ve tried is repotting with new soil. A lot of work, but it’s super worth it not to have flies buzzing about.

### Geo ha commentato il 2025-05-13

Uugh they’re so annoying :(  
I did repot most of my plants but they keep coming back

### Amie206 ha commentato il 2025-05-13

Death drops. Also letting your plants dry out more in between watering

#### Geo ha risposto il 2025-05-13

Where can I find that product? Just looked it up on amazon and found a spray

#### Amie206 ha risposto il 2025-05-13

Happy Happy Houseplant sells it. You add it to the water. Mosquitoe bits also work, but I found those were more susceptible to growing moldy

### Wolfen 🐺 ha commentato il 2025-05-13

Microbiolift drops for ponds in every watering. Same stuff BTi that's in mosquito bits

### Sorbe ha commentato il 2025-05-13

Aside from the sticky traps I’ve tried 2/3 water to 1/3 isopropyl alcohol and mist it on your plants and the soil. Tried it a couple of days ago for my plants and it seemed to have worked. I added a bit more water to alcohol ratio because I didn’t wanna harm my plants and the gnats have gone down in amount. Alternating that with cinnamon seems to have worked well!

### alexkazam19 ha commentato il 2025-05-13

I let my plant dry out almost completely, repotted with more drainage, and topped with pine mulch. I haven’t had any problems since

#### Geo ha risposto il 2025-05-13

I tried that, they’ll come in from the bottom AND they live even in the plants that have dry soil. And my soil is well draining :(

#### alexkazam19 ha risposto il 2025-05-13

😭 Dang, hopefully you have more success with these other suggestions. Good luck, friend 🍀

#### Geo ha risposto il 2025-05-13

Thank you friend 😭🤍

#### Victoria Maddison ha risposto il 2025-05-14

Dang, what kinda hulk fungus gnats are they? 😭 sending gnat-free vibes your way

### MicAZ ha commentato il 2025-05-13

Repotting and bottom watering has been my best fix. Still see them sometimes though 😩

#### Geo ha risposto il 2025-05-13

I tried that too. They just get in the bottom🤡😭

### Plant Dog Mom ha commentato il 2025-05-13

You can use cinnamon powder on the soil. I unfortunately can’t post a link here but if you go to YouTube. Search for…how I eliminated fungus gnats on my houseplants by Sheffield Made Plants. I found this helpful. Good luck!! 🙏🏽

### Bb ha commentato il 2025-05-13

Hi there, I use yellow sticky traps to trap the adults fungus gnats and to get rid of the larvae, water with a larvicide called Vectobac. It’s a bacteria that you add to the water, watering once in week one then once a week later and that’s it.

### Bb ha commentato il 2025-05-13

Oh also to deal with the larvae you can use beneficial nematodes. I haven’t tried that option as the bacterial larvicide was easier to source where I am.

[Altri commenti](https://getplanta.com/community/lKxUkhzRR_aIJD7o1QvtwQ/y8NB97FM0wy6P4mSaKuXYJ.md?cursor=mPtVN4IFPxhQb3N0cy5HZXRBbGwAAAAAAAAAAAAAAABY6P_G5YzcGA&language=it)

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