---
title: "Hello! I’ve had an issue with fungus gnats and I think it’s the soil…"
description: "Hello! I’ve had an issue with fungus gnats and I think it’s the soil I’ve been buying since they keep coming back after I repot plants. How do you know you’re…"
url: "https://getplanta.com/community/lKxUkhzRR_aIJD7o1QvtwQ/ZZJw3PcYkIDmXaTVTKTdBT?language=ko"
community: "Pests, diseases and problems"
author: "Jessica"
published: "2025-04-30T03:52:16.547983Z"
language: "en"
image: "https://images.getplanta.com/v2/cloudinary/global_data/communities/pestsDiseasesAndProblems.jpg"
---

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

# Hello! I’ve had an issue with fungus gnats and I think it’s the soil…

_Jessica님이 2025-04-30에 게시함_

Hello! I’ve had an issue with fungus gnats and I think it’s the soil I’ve been buying since they keep coming back after I repot plants. How do you know you’re buying soil from a good source and anything you recommend doing to treat the soil before potting to make sure there aren’t any gnat eggs in it? Thank you!

## 8개의 댓글

### Danii님이 2025-04-30에 댓글을 남겼어요.

A method to treat soil for possible pests is to pour boiling water over it while in a well draining container/pot.

#### Gaileen Joy님이 2025-04-30에 답변했습니다.

NOT while the plant is in the soil though!!

### Sapphire님이 2025-04-30에 댓글을 남겼어요.

Neem oil or castille soap mixed with water can take care of the adults, then to get eggs and larvae you can use BTI treatment or mosquito bits. There are also certain powders that you can sprinkle on your plant that causes the fungus gnats to meet their maker if they try to invade.

### Luke님이 2025-04-30에 댓글을 남겼어요.

Nematodes worked for me

#### Anne Marie님이 2025-04-30에 답변했습니다.

I second this! Practically eliminated my problem

#### Jessica님이 2025-04-30에 답변했습니다.

Is this safe around animals? And what’s your preferred brand for indoor plants?

### KJM님이 2025-04-30에 댓글을 남겼어요.

I would not be too critical of your soil company. It would be quite impossible for them to ensure that you never get gnats. Some gnat will come along and lay eggs in your soil regardless of how clean it was when you got it. Adult gnats are not harmful to your plant. The larva can do damage to the roots. They're just very annoying to you. Use yellow sticky traps to entrap the adults and treat the soil with mosquito bites or other treatment for mosquitoes. Some people make a tea from the mosquito bites and watered in others crumble up the product and scritch it into the top inch or so of soil. This will work to kill the larvae. Neem will also work as a suffocant. Either way you want to attack life cycle from both ends adult and larva.

### Sunny님이 2025-04-30에 댓글을 남겼어요.

All soil can get fungus gnats if the conditions are right such as overwatering. The adults fly around and can come back to lay eggs even after you replace the soil with a brand new bag. Let the soil dry out. Treat with Mosquito Bits and use yellow stickies to trap the adults until all the larvae are dead. Continue to water with Mosquito Bits every time.

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