---
title: "Fungus Gnat Killer — $2.3M/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/patio-lawn-garden/fungus-gnat-killer"
last_updated: "2026-08-05T21:18:45.630Z"
locale: en
meta:
description: "Niche score 67/100 · $2.3M/yr market · 1.3M searches/yr · $16.45 avg price. Clears our launch bar. Data updated Jul 2026."
"og:description": "Niche score 67/100 · $2.3M/yr market · 1.3M searches/yr · $16.45 avg price. Clears our launch bar. Data updated Jul 2026."
"og:title": "Fungus Gnat Killer — $2.3M/yr Amazon US Niche (2026) - Flapen"
---
# **fungus gnat killer**
**Launch it**
A $2.3M/yr market growing +45.3% this quarter with returns at 0.6% — clears our launch bar.
Market size 95Growth 66Conversion 89Competition 36Returns 97Price range 67Avg price 79Brand share 31Review moat 21Quality gap 68
**Returns**
**Incredible****0.6%**
return rate — above 5% kills the launch gate
**Market size**
**Incredible****$2.3M**
$2.3M/yr · 1.3M searches
**Conversion**
**Great****10.6%**
search→purchase rate — share of searches ending in a sale
**Avg price**
**Great****$16.45**
avg listing price — sweet spot $15–$100
**Quality gap**
**Good****4.3★**
avg incumbent rating — lower means beatable quality
**Price range**
**Good****$5.98–$33.12**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Growth**
**Good****+45.3%**
90-day search growth — must beat 0% to launch
**Competition**
**Okay****63%**
top-5 click share — leaders hold, buyers still browse
**Brand share**
**Okay****86%**
top-5 brand share — brands hold most of the demand
**Review moat**
**Bad****11,590.25**
avg incumbent reviews — the moat a new listing must climb
According to Flapen's Amazon United States niche tracking, fungus gnat killer is a $2.3M/yr Amazon United States market (1.3M searches/yr). The top 5 brands hold 86% of demand. Demand peaks in May–Jun–Jul–Aug. Verdict: Launch it — 67/100.
Data updated Jul 23, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **fungus gnat killer market data**
- **Units sold / yr**
- **125K–150K**
- avg 6,000–8,000/product
- **Revenue / yr**
- **$2.1M–$2.5M**
- units × avg price
- **Conversion rate**
- **10.6%**
- **Avg BSR**
- **#119**
- **Page quality**
- **0%**
- **Prime**
- **90%**
- **Sponsored**
- **75%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **64 months**
- **Avg seller age**
- **146 days**
## **Competition & brand share**
The top 5 products take 63% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**12 **—flat
**Sellers**
**94**
**Top-5 brand share**
**86%**
Top 20: 100%
**Top-5 click share**
**63%**
Top 20: 100%
**Open market**
**11%**
- Bonide57% - Mighty Mint10% - Kate's Home & Garden9% - KATE'S GARDEN6% - Bayer Advanced3% - Summit3% - Open — no brand owns it (6 brands, 11%)
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — +45.3% search growth over the last 90 days.
30K20KSpike '25Prime Day '25Spike '26 seasonSepDecMarJunAugNovMarMay
Peak months: May, Jun, Jul, Aug · busiest ÷ quietest = 3.1×
[**Open Trend **](https://flapen.com/research/us/patio-lawn-garden/fungus-gnat-killer/trend)
## **Top fungus gnat killer search terms**
- **fungus gnat killer**124K/yr+58.2%7.8% conv. - **bonide systemic granules**92K/yr+52.5%11.4% conv. - **systemic houseplant insect control**97K/yr+19.7%11.9% conv. - **houseplant pest spray**62K/yr+36.8%5.2% conv. - **perfect plantista houseplant pest spray**53K/yr+70.6%3.2% conv. - **gnat spray for indoor plants**64K/yr+38.1%11.2% conv. - **house plant pest spray**43K/yr+101.8%5.6% conv. - **systemic granules**43K/yr+54.6%10.1% conv. - **fungus gnat**49K/yr+35.3%8.0% conv. - **plant spray**35K/yr+44.0%2.7% conv. [**All search terms **](https://flapen.com/research/us/patio-lawn-garden/fungus-gnat-killer/search-terms)
## **Top fungus gnat killer products on Amazon**
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
0%10%$231K20%$461K30%$692K40%$922K1001K10K100K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 20 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Bonide Systemic Houseplant Insect Control 8 oz Ready-to-Use Granules for Indoors and Outdoors Protects Plants from Insects**Bonide**$11.25**4.4★16,875 rev](https://www.amazon.com/dp/B000BX1HKI) [2**Bonide Captain Jacks Neem Oil 32 oz Ready-to-Use Spray Multi-Purpose Fungicide Insecticide and Miticide for Organic Gardening**Bonide**$10.85**4.4★48,911 rev](https://www.amazon.com/dp/B007CRG4CW) [3**Kates Home & Garden Plant Spray for Insects & Getting Rid of Gnats with 12 Sticky Traps. Fungus Gnat Killer & Bug Spray for Indoor Plants (16oz Peppermint Pet Safe Non Toxic)**Kate's Home & Garden**$19.53**4.0★1,626 rev](https://www.amazon.com/dp/B0CN427VBX) [4**Bonide Insect Control Systemic Granules 4 lbs. Ready-to-Use Water Resistant Long Lasting Protection Outdoor Use**Bonide**$22.34**4.6★6,950 rev](https://www.amazon.com/dp/B000BWZ9U8) [5**Kates Garden Plant Spray for Insects & Getting Rid of Gnats. Fungus Gnat Killer & Bug Spray for Indoor Plants (16oz Pet Safe Non Toxic)**KATE'S GARDEN**$17.92**3.8★3,484 rev](https://www.amazon.com/dp/B09WWLDGDQ)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Dr. Killigans Doom & Bloom House Plant Pest Spray - for Outdoor & Indoor Gardening Kills Aphids Spider Mites & Thrips on Contact with Adjustable Trigger Sprayer (16 oz)**Dr. Killigan's**$16.77**148 rev5mo ago](https://www.amazon.com/dp/B0GM2JFWWY) [**KIKALIFE Fruit Fly Trap & Fungus Gnat Traps 40 Pack Yellow Sticky Gnat Traps for House Indoor & Outdoor Plants Non-Toxic and Odorless Insect Bug Catcher**Kikalife**$6.89**1,004 rev1y ago](https://www.amazon.com/dp/B0F8HDZFQM) [**NatureStop Fungus Gnat Killer Spray (16oz)**NatureStop**$17.18**145 rev1y ago](https://www.amazon.com/dp/B0F3JMJPKL) [**Mighty Mint Peppermint Oil Plant Protection Spray Insect & Pest Control for Gnats Spider Mites & Aphids Plant-Based Easy-to-Use - 16 oz**Mighty Mint**$21.23**4,495 rev2y ago](https://www.amazon.com/dp/B0D7NV4215) [**Kates Home & Garden Plant Spray for Insects & Getting Rid of Gnats with 12 Sticky Traps. Fungus Gnat Killer & Bug Spray for Indoor Plants (16oz Peppermint Pet Safe Non Toxic)**Kate's Home & Garden**$19.53**1,626 rev2y ago](https://www.amazon.com/dp/B0CN427VBX)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Dr. Killigans Doom & Bloom House Plant Pest Spray - for Outdoor & Indoor Gardening Kills Aphids Spider Mites & Thrips on Contact with Adjustable Trigger Sprayer (16 oz)**Dr. Killigan's**$16.77**4.2★**▲ 154%**](https://www.amazon.com/dp/B0GM2JFWWY) [**KIKALIFE Fruit Fly Trap & Fungus Gnat Traps 40 Pack Yellow Sticky Gnat Traps for House Indoor & Outdoor Plants Non-Toxic and Odorless Insect Bug Catcher**Kikalife**$6.89**4.5★**▲ 53%**](https://www.amazon.com/dp/B0F8HDZFQM) [**NatureStop Fungus Gnat Killer Spray (16oz)**NatureStop**$17.18**3.8★**▲ 44%**](https://www.amazon.com/dp/B0F3JMJPKL) [**Mighty Mint Peppermint Oil Plant Protection Spray Insect & Pest Control for Gnats Spider Mites & Aphids Plant-Based Easy-to-Use - 16 oz**Mighty Mint**$21.23**4.3★**▲ 30%**](https://www.amazon.com/dp/B0D7NV4215) [**Bonide Product 951 Systemic House Plant Insect Control 8 Oz. (3 Pack)**Bonide**$26.98**4.6★**▲ 29%**](https://www.amazon.com/dp/B000KE1U2I)
**~~View all trending →~~**
## **What buyers say about fungus gnat killer**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Pest/Insect Control**33%
*“Effective pest control”*
**Smell**14%
*“Amazing Smell”*
**Quality-Overall**7%
*“Excellent product”*
**Advertised Vs Actual Product**7%
*“AS ADVERTISED”*
**Plant Growth**7%
*“My plants tolerated it very well”*
**Value For Money**5%
*“Good for the money”*
**Ease Of Use**5%
*“Easy to use”*
**Adhesion/Stickiness**4%
*“These have good stickiness”*
**Spray/Flow**2%
*“The sprayer works well”*
**Strength**2%
*“They are sturdy”*
### **What buyers complain about **
**Pest/Insect Control**35%
*“Did not repel”*
**Functionality-Overall**14%
*“Did not work as stated”*
**Smell**7%
*“Terrible smell”*
**Adhesion/Stickiness**5%
*“Very weak adhesive”*
**Spray/Flow**4%
*“Spray didn't work”*
**Value For Money**3%
*“Too expensive”*
**Plant Growth**3%
*“they didnt bloom”*
**Advertised Vs Actual Product**2%
*“Not what it says”*
**Leak-Proof**1%
*“Leaked all over”*
**Durability**1%
*“doesnt last”*
### **Top return reasons **
**Functionality-Overall**20%
**Pest/Insect Control**16%
**Leak-Proof**12%
**Spray/Flow**10%
**Advertised Vs Actual Product**9%
**Value For Money**7%
**Smell**6%
**Size-Overall**5%
**Adhesion/Stickiness**3%
**Defective Material/Parts**3%
## **Common questions**
- **Is fungus gnat killer profitable to sell on Amazon United States?**
- The niche generates $2.3M/yr across 20 tracked products. 1 of 1 products launched in the last 360 days are still selling. 90-day search growth is +45.3%. Flapen's verdict: Launch it (67/100).
- **How competitive is the fungus gnat killer niche?**
- 12 brands and 94 sellers compete. The top 5 products take 63% of clicks and top 5 brands hold 86% of demand.
- **What do buyers complain about in fungus gnat killer?**
- Top complaints mined from reviews: Pest/Insect Control, Functionality-Overall, Smell. The return rate is 0.6%.
- **When does demand for fungus gnat killer peak?**
- Demand peaks in May–Jun–Jul–Aug; the busiest month runs 3.1× the quietest.
- **What does it cost to enter the fungus gnat killer niche?**
- Listings span $5.98–$33.12; the average listing price is $16.45 (sweet spot $15–$100). The average incumbent carries 11,590 reviews — the moat a new listing must climb.
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