Is mold killer profitable to sell on Amazon United States?

The niche generates $6.0M/yr across 25 tracked products. 4 of 4 products launched in the last 360 days are still selling. 90-day search growth is -1.9%. Flapen's verdict: Worth a look (65/100).

How competitive is the mold killer niche?

14 brands and 90 sellers compete. The top 5 products take 60% of clicks and top 5 brands hold 67% of demand.

What do buyers complain about in mold killer?

Top complaints mined from reviews: Functionality-Overall, Smell, Stain Resistance. The return rate is 0.9%.

When does demand for mold killer peak?

Demand peaks in Oct; the busiest month runs 1.8× the quietest.

What does it cost to enter the mold killer niche?

Listings span $3.80–$59.92; the average listing price is $19.15 (sweet spot $15–$100). The average incumbent carries 9,191 reviews — the moat a new listing must climb.

Mold Killer

Worth a look

Shows a $6.0M/yr market, but a failed launch gate (market size, growth, or returns) keeps it on the watch list.

Market size

Incredible$6.0M

$6.0M/yr · 2.8M searches

Returns

Incredible0.9%

return rate — above 5% kills the launch gate

Conversion

Great11.1%

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

Avg price

Great$19.15

avg listing price — sweet spot $15–$100

Price range

Great$3.80–$59.92

cheapest to priciest tracked listing — scored on the share inside $15–$100

Brand share

Good67%

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

Quality gap

Good4.4★

avg incumbent rating — lower means beatable quality

Competition

Okay60%

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

Growth

Bad-1.9%

90-day search growth — must beat 0% to launch

Review moat

Bad9,191.16

avg incumbent reviews — the moat a new listing must climb

Is mold killer profitable on Amazon?

According to Flapen's Amazon United States niche tracking, mold killer is a $6.0M/yr Amazon United States market (2.8M searches/yr). The top 5 brands hold 67% of demand. Demand peaks in Oct. Verdict: Worth a look — 65/100.

Data updated Jul 21, 2026 · scored weekly · How we score niches

mold killer market size & sales

Units sold, revenue, conversion and listing quality across the tracked shelf.

Units sold / yr: 300K–400K; avg 8,000–10,000/product
Revenue / yr: $5.7M–$7.7M; units × avg price
Conversion rate: 11.1%
Avg BSR: #30
Page quality: 0%
Prime: 96%
Sponsored: 88%
Out of stock: 0.2%
Avg brand age: 66 months
Avg seller age: 151 days

Competition: brands, sellers & click share

The top 5 products take 60% of clicks — established leaders, but buyers still shop beyond them.

Brands

14 falling

Sellers

Top-5 brand share

67%

Top 20: 100%

Top-5 click share

60%

Top 20: 95%

Open market

24%

RMR Brands21%
30 SECONDS17%
ACTIVE10%
Lysol10%
Concrobium9%
Zep9%

mold killer demand & seasonality

Weekly Amazon search volume, last 104 weeks — -1.9% search growth over the last 90 days.

Peak months: Oct · busiest ÷ quietest = 1.8×

Open Trend

Top mold killer search terms shoppers use

The exact queries shoppers type, with yearly volume, growth and conversion.

mold remover855K/yr -20.6%9.0% conv.
mold and mildew remover358K/yr +39.5%9.3% conv.
zep mold and mildew cleaner142K/yr +75.3%5.5% conv.
mold killer288K/yr -30.5%6.8% conv.
mildew removal spray134K/yr +22.7%9.7% conv.
mold and mildew remover bathroom cleaner165K/yr -27.2%11.2% conv.
lysol mold and mildew remover110K/yr -17.7%6.7% conv.
mold spray103K/yr +9.6%11.9% conv.
mold cleaner103K/yr -4.4%8.6% conv.
shower mold remover80K/yr +3.4%14.4% conv.

All search terms

Top mold killer products & what they sell for

Every tracked product — its share of the shelf, its review moat, and what it sells for.

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 24 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

RMR Brands DIY Mold & Stain Remover Bundle Complete Mold Killer & Mildew Prevention Kit Disinfectant Spray Includes 2-32 fluid ounce Bottles

RMR Brands$23.764.5★10,051 rev

30 SECONDS Pro Mold and Mildew Stain Remover | Scrub Free | Brighter Results Instantly | Ready To Use | 32 Fl. Oz.

30 SECONDS$16.864.4★5,663 rev

ACTIVE Mold Stain Remover Gel Cleaner Heavy Duty Stain Cleaner for Front Loader Washing Machine Seal Bathroom Grout Shower Caulk - Front Load Washer Cleaning Solution - 7 Fl Oz

ACTIVE$17.694.1★27,681 rev

Lysol Mold & Mildew Remover Spray Bathroom & Shower Cleaner Disinfectant Spray Stain Remover with Bleach Tough on Black Mold Multipurpose Cleaner for Home and Kitchen 32oz

Lysol$4.564.7★1,630 rev

Concrobium Mold Control 32 oz Spray Eliminates & Prevents Mold EPA-Registered Bleach-Free Odorless VOC-Free

Concrobium$13.364.1★2,196 rev

Newest

by launch date

Zep Mold Stain and Mildew Stain Remover 1 Gallon (Case of 2) ZUMILDEW128 - Professional Strength No Scrub Formula

Zep$26.3127 rev

3mo ago

Moldex Mold & Mildew Surface Stain Cleaner with Bleach 32 oz Fast Acting Spray for Tile Grout Siding and Outdoor Surfaces

Moldex$8.8732 rev

4mo ago

Alien Power Instant Stain Remover Spray for Mold and Mildew and Grout All Purpose No-Scrub Cleaner for Bathroom & Household Surfaces Tiles Wall & Washing Machines - 3 Packets (Makes 72 Fl Oz)

ALIEN TAPE$59.92650 rev

6mo ago

Clorox Plus Tilex Mold and Mildew Remover with Bleach Spray Bottle 32 Fluid Ounces Unscented Pack of 3

Clorox$16.641,246 rev

11mo ago

Vigorder Mold Stain Cleaner Gel 8 FL oz Heavy-Duty Household Cleaner for Washing Machine Gasket Shower Caulk Bathroom Grout & Front Loader Seal

Vigorder$12.80214 rev

1y ago

What reviews say buyers love and hate about mold killer

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

What buyers love

Ease Of Cleaning17%

“Cleans great”

Efficiency16%

“Works beautifully”

Quality-Overall15%

“EXCELLENT PRODUCT”

Advertised Vs Actual Product11%

“Better than expected”

Ease Of Use6%

“easy to control”

Smell6%

“Nice smell”

Value For Money5%

“Money well spent”

Spray/Flow2%

“Easy to spray”

Strength2%

“This is some powerful stuff”

Product Condition2%

“Looks like new”

What buyers complain about

Functionality-Overall24%

“No results”

Smell11%

“Unpleasant odor”

Stain Resistance8%

“The stain was very bad”

Ease Of Cleaning7%

“Does not clean as advertised”

Value For Money6%

“very expensive”

Leak-Proof6%

“Leaks”

Advertised Vs Actual Product4%

“Didnt work as advertised”

Ease Of Use2%

“It is hard to squeeze”

Durability2%

“broke after a few months”

Quality-Overall1%

“NO QUALITY CONTROL”

Top return reasons

Leak-Proof31%

Functionality-Overall20%

Advertised Vs Actual Product10%

Stain Resistance9%

Value For Money5%

Smell4%

Cleaning Modes3%

Wet Cleaning2%

Defective Material/Parts2%