Is kilz mold and mildew primer profitable to sell on Amazon United States?

The niche generates $408K/yr across 15 tracked products. 90-day search growth is +10.7%. Flapen's verdict: Worth a look (51/100).

How competitive is the kilz mold and mildew primer niche?

5 brands and 107 sellers compete. The top 5 products take 71% of clicks and top 5 brands hold 100% of demand.

What do buyers complain about in kilz mold and mildew primer?

Top complaints mined from reviews: Functionality-Overall, Smell, Leak-Proof. The return rate is 1.2%.

When does demand for kilz mold and mildew primer peak?

Demand peaks in Oct; the busiest month runs 1.6× the quietest.

What does it cost to enter the kilz mold and mildew primer niche?

Listings span $9.87–$98.01; the average listing price is $29.28 (sweet spot $15–$100). The average incumbent carries 2,997 reviews — the moat a new listing must climb.

kilz mold and mildew primer

Worth a look

Shows a sweet-spot price point ($29.28 avg), but brand-locked demand (top 5 brands take 100% of clicks) keeps it on the watch list.

Avg price

Incredible$29.28

avg listing price — sweet spot $15–$100

Returns

Great1.2%

return rate — above 5% kills the launch gate

Price range

Great$9.87–$98.01

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

Quality gap

Great4.3★

avg incumbent rating — lower means beatable quality

Market size

Good$408K

$408K/yr · 293K searches

Conversion

Good4.8%

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

Growth

Okay+10.7%

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

Review moat

Okay2,997.2

avg incumbent reviews — the moat a new listing must climb

Competition

Bad71%

top-5 click share — a locked-up shelf

Brand share

Bad100%

top-5 brand share — brand-locked demand

According to Flapen's Amazon United States niche tracking, kilz mold and mildew primer is a $408K/yr Amazon United States market (293K searches/yr). The top 5 brands hold 100% of demand. Demand peaks in Oct. Verdict: Worth a look — 51/100.

Data updated Jul 28, 2026 · scored weekly · How we score niches

kilz mold and mildew primer market data

Units sold / yr: 20K–25K; avg 1,500–2,000/product
Revenue / yr: $586K–$732K; units × avg price
Conversion rate: 4.8%
Avg BSR: #56
Page quality: 0%
Prime: 93%
Sponsored: 80%
Out of stock: 0.0%
Avg brand age: 71 months
Avg seller age: 157 days

Competition & brand share

The top 5 products capture 71% of clicks — a locked-up shelf that new listings rarely crack.

Brands

5 rising

Sellers

107

Top-5 brand share

100%

Top 20: 100%

Top-5 click share

71%

Top 20: 100%

Open market

Zinsser75%
KILZ17%
Masterchem Industries4%
Concrobium3%
RMR Brands2%

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — +10.7% search growth over the last 90 days.

Peak months: Oct · busiest ÷ quietest = 1.6×

Open Trend

Top kilz mold and mildew primer search terms

kilz mold and mildew primer80K/yr +30.8%5.1% conv.
zinsser mold killing primer36K/yr +17.8%6.6% conv.
mold killing primer23K/yr +30.5%6.8% conv.
killzall paint for mold23K/yr -6.3%5.4% conv.
mold paint19K/yr +9.0%5.8% conv.
kills paint14K/yr +16.7%3.8% conv.
mold resistant paint10K/yr -8.2%4.6% conv.
mold paint killer8K/yr +30.8%5.8% conv.
mold killing paint10K/yr -14.0%6.9% conv.
mold killer paint7K/yr +31.5%6.0% conv.

All search terms

Top kilz mold and mildew primer 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 15 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

qt Zinsser 276087 White Mold Killing Primer Water-Based Mold Killing Primer

Zinsser$16.784.5★4,434 rev

Zinsser 02774 PERMA-WHITE Mold & Mildew Proof Interior Paint Quart Eggshell White

Zinsser$15.514.5★1,638 rev

qt Zinsser 276087 White Zinsser Mold Killing Primer Water-Based Mold Killing Primer (Pack of 3)

Zinsser$54.554.5★4,434 rev

1 Quart Bulls Eye 1-2-3 Primer Sealer Stain Killer

Zinsser$11.064.6★3,640 rev

Rust-Oleum Zinsser 287512 Molding Blocking Spray Primer 13 oz White

Zinsser$12.864.5★4,434 rev

Newest

by launch date

Zinsser Mold Blocking Spray Primer Interior & Exterior White 6-Pack

Zinsser$49.034,434 rev

5y ago

Rust-Oleum Zinsser 287512 Molding Blocking Spray Primer 13 oz White

Zinsser$12.864,434 rev

5y ago

Mold & Mildew Primer Sealer & Stain Blocker Interior & Exterior 1-Qt.

KILZ$98.011 rev

6y ago

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

Concrobium$13.352,239 rev

6y ago

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

RMR Brands$23.7710,120 rev

9y ago

What buyers say about kilz mold and mildew primer

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

What buyers love

Quality-Overall13%

“overall a quality buy just for the mold remover”

Efficiency13%

“Effective”

Ease Of Cleaning12%

“Doesnt leave a mess”

Advertised Vs Actual Product9%

“As advertised”

Paint Quality6%

“Its good paint”

Coverage5%

“Covers well”

Smell5%

“made everything smell clean”

Value For Money5%

“Well worth it”

Ease Of Use5%

“Easy to use”

Spray/Flow3%

“easy to spray”

What buyers complain about

Functionality-Overall21%

“Did not work”

Smell10%

“doesn't smell”

Leak-Proof8%

“Arrived leaking everywhere”

Paint Quality8%

“in spite of the paint”

Ease Of Cleaning4%

“It took us about an hour to completely clean”

Spray/Flow4%

“Spray Bottle Did Not Work”

Stain Resistance3%

“Some of the stains were really bad”

Ease Of Use2%

“I cannot use it”

Color2%

“on each picture the white area you see was as dark as the spots I missed”

Value For Money2%

“And the replacement cost of the gasket installed was outrageous”

Top return reasons

Leak-Proof27%

Paint Quality16%

Functionality-Overall15%

Size-Overall7%

Advertised Vs Actual Product7%

Value For Money6%

Spray/Flow5%

Smell3%