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.

fungus gnat killer

Launch it

A $2.3M/yr market growing +45.3% this quarter with returns at 0.6% — clears our launch bar.

Returns

Incredible0.6%

return rate — above 5% kills the launch gate

Market size

Incredible$2.3M

$2.3M/yr · 1.3M searches

Conversion

Great10.6%

search→purchase rate — share of searches ending in a sale

Avg price

Great$16.45

avg listing price — sweet spot $15–$100

Quality gap

Good4.3★

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

Okay63%

top-5 click share — leaders hold, buyers still browse

Brand share

Okay86%

top-5 brand share — brands hold most of the demand

Review moat

Bad11,590.25

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

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

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.

Peak months: May, Jun, Jul, Aug · busiest ÷ quietest = 3.1×

Open Trend

Top fungus gnat killer search terms

fungus gnat killer124K/yr +58.2%7.8% conv.
bonide systemic granules92K/yr +52.5%11.4% conv.
systemic houseplant insect control97K/yr +19.7%11.9% conv.
houseplant pest spray62K/yr +36.8%5.2% conv.
perfect plantista houseplant pest spray53K/yr +70.6%3.2% conv.
gnat spray for indoor plants64K/yr +38.1%11.2% conv.
house plant pest spray43K/yr +101.8%5.6% conv.
systemic granules43K/yr +54.6%10.1% conv.
fungus gnat49K/yr +35.3%8.0% conv.
plant spray35K/yr +44.0%2.7% conv.

All 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.

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

Bonide Systemic Houseplant Insect Control 8 oz Ready-to-Use Granules for Indoors and Outdoors Protects Plants from Insects

Bonide$11.254.4★16,875 rev

Bonide Captain Jacks Neem Oil 32 oz Ready-to-Use Spray Multi-Purpose Fungicide Insecticide and Miticide for Organic Gardening

Bonide$10.854.4★48,911 rev

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$19.534.0★1,626 rev

Bonide Insect Control Systemic Granules 4 lbs. Ready-to-Use Water Resistant Long Lasting Protection Outdoor Use

Bonide$22.344.6★6,950 rev

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$17.923.8★3,484 rev

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$16.77148 rev

5mo ago

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$6.891,004 rev

1y ago

NatureStop Fungus Gnat Killer Spray (16oz)

NatureStop$17.18145 rev

1y ago

Mighty Mint Peppermint Oil Plant Protection Spray Insect & Pest Control for Gnats Spider Mites & Aphids Plant-Based Easy-to-Use - 16 oz

Mighty Mint$21.234,495 rev

2y ago

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$19.531,626 rev

2y ago

What buyers say about fungus gnat killer

What buyers praise and complain about, mined from review topics.

What buyers love

Pest/Insect Control33%

“Effective pest control”

Smell14%

“Amazing Smell”

Quality-Overall7%

“Excellent product”

Advertised Vs Actual Product7%

“AS ADVERTISED”

Plant Growth7%

“My plants tolerated it very well”

Value For Money5%

“Good for the money”

Ease Of Use5%

“Easy to use”

Adhesion/Stickiness4%

“These have good stickiness”

Spray/Flow2%

“The sprayer works well”

Strength2%

“They are sturdy”

What buyers complain about

Pest/Insect Control35%

“Did not repel”

Functionality-Overall14%

“Did not work as stated”

Smell7%

“Terrible smell”

Adhesion/Stickiness5%

“Very weak adhesive”

Spray/Flow4%

“Spray didn't work”

Value For Money3%

“Too expensive”

Plant Growth3%

“they didnt bloom”

Advertised Vs Actual Product2%

“Not what it says”

Leak-Proof1%

“Leaked all over”

Durability1%

“doesnt last”

Top return reasons

Functionality-Overall20%

Pest/Insect Control16%

Leak-Proof12%

Spray/Flow10%

Advertised Vs Actual Product9%

Value For Money7%

Smell6%

Size-Overall5%

Adhesion/Stickiness3%

Defective Material/Parts3%

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.