slate cleaner
Skip itBrand-locked demand (top 5 brands take 94% of clicks) — this niche doesn't clear our bar today.
Returns
Incredible0.4%return rate — above 5% kills the launch gate
Conversion
Great9.2%search→purchase rate — share of searches ending in a sale
Avg price
Great$16.99avg listing price — sweet spot $15–$100
Quality gap
Good4.4★avg incumbent rating — lower means beatable quality
Price range
Good$5.14–$29.55cheapest to priciest tracked listing — scored on the share inside $15–$100
Growth
Okay+12.0%90-day search growth — must beat 0% to launch
Review moat
Okay3,138.3avg incumbent reviews — the moat a new listing must climb
Market size
Bad$60K$60K/yr · 38K searches
Competition
Bad82%top-5 click share — a locked-up shelf
Brand share
Bad94%top-5 brand share — brand-locked demand
According to Flapen's Amazon United States niche tracking, slate cleaner is a $60K/yr Amazon United States market (38K searches/yr). The top 5 brands hold 94% of demand. Demand peaks in Aug–Sep. Verdict: Skip it — 45/100.
Data updated Jul 21, 2026 · scored weekly · How we score niches
slate cleaner market data
- Units sold / yr
- 3K–4K
- avg 250–500/product
- Revenue / yr
- $51K–$68K
- units × avg price
- Conversion rate
- 9.2%
- Avg BSR
- #79
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 80%
- Out of stock
- 3.2%
- Avg brand age
- 94 months
- Avg seller age
- 161 days
Competition & brand share
The top 5 products capture 82% of clicks — a locked-up shelf that new listings rarely crack.Brands
7 flat
Sellers
63
Top-5 brand share
94%
Top 20: 100%
Top-5 click share
82%
Top 20: 100%
Open market
2%
- Black Diamond Stoneworks62%
- Weiman11%
- Zep11%
- Granite Gold7%
- Marblelife4%
- CLR3%
- Open — no brand owns it (1 brand, 2%)
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — +12.0% search growth over the last 90 days.Peak months: Aug, Sep · busiest ÷ quietest = 2.8×
Top slate cleaner search terms
- limestone cleaner10K/yr
- travertine cleaner11K/yr
- travertine floor cleaner5K/yr
- travertine tile cleaner4K/yr
- slate cleaner4K/yr
- travertine stain remover2K/yr
- natural stone cleaner for floors2K/yr
Top slate cleaner 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.
All 10 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Black Diamond Stoneworks Natural Stone Cleaner - Limestone Slate & Travertine Cleaner - Natural Stone Shower Cleaner for Marble - Concentrated PH Neutral Stone Floor Cleaner - 1-Gallon.
Black Diamond Stoneworks$29.554.3★1,937 rev
Black Diamond Stoneworks Limestone and Travertine Floor Cleaner: Natural Stone Marble Slate Polished Concrete honed or tumbled surfaces. Concentrated Ph. Neutral. (1-Quart)
Black Diamond Stoneworks$19.854.3★1,937 rev
Stone Care International Granite Cleaner - 32 Fluid Ounces Granite & Stone Tile Travertine Limestone Slate Clean
Weiman$9.854.6★4,229 rev
Zep Neutral PH Industrial Floor Cleaner - 1 Gallon - ZUNEUT128 - Concentrated Pro Trusted All-Purpose Floor Cleaner
Zep$13.254.6★7,792 rev
Granite Gold Stone And Tile Floor Cleaner - No-Rinse Deep Cleaning Granite Marble Travertine Ceramic Solution - 32 Ounces (Packaging may vary)
Granite Gold$9.514.5★1,480 rev
Newest
by launch date
CLR Brands Lime & Rust Remover Blasts Calcium Dissolves Lime Zaps Stubborn Rust Stains and Hard Water 22 Ounce Spray Bottle (Pack of 1)
CLR$5.143,881 rev
Zep Neutral PH Industrial Floor Cleaner - 1 Gallon - ZUNEUT128 - Concentrated Pro Trusted All-Purpose Floor Cleaner
Zep$13.257,792 rev
Stone Care International Granite Cleaner - 32 Fluid Ounces Granite & Stone Tile Travertine Limestone Slate Clean
Weiman$9.854,229 rev
Black Diamond Stoneworks Natural Stone Cleaner - Limestone Slate & Travertine Cleaner - Natural Stone Shower Cleaner for Marble - Concentrated PH Neutral Stone Floor Cleaner - 1-Gallon.
Black Diamond Stoneworks$29.551,937 rev
StoneTech Mold & Mildew Stain Remover 24OZ (709ML) Spray Bottle
StoneTech$18.261,490 rev
Trending
90-day click momentumCLR Brands Lime & Rust Remover Blasts Calcium Dissolves Lime Zaps Stubborn Rust Stains and Hard Water 22 Ounce Spray Bottle (Pack of 1)
CLR$5.144.5★
StoneTech Mold & Mildew Stain Remover 24OZ (709ML) Spray Bottle
StoneTech$18.264.4★
Black Diamond Stoneworks Limestone and Travertine Floor Cleaner: Natural Stone Marble Slate Polished Concrete honed or tumbled surfaces. Concentrated Ph. Neutral. (1-Quart)
Black Diamond Stoneworks$19.854.3★
Black Diamond Stoneworks Natural Stone Cleaner - Limestone Slate & Travertine Cleaner - Natural Stone Shower Cleaner for Marble - Concentrated PH Neutral Stone Floor Cleaner - 1-Gallon.
Black Diamond Stoneworks$29.554.3★
Zep Neutral PH Industrial Floor Cleaner - 1 Gallon - ZUNEUT128 - Concentrated Pro Trusted All-Purpose Floor Cleaner
Zep$13.254.6★
What buyers say about slate cleaner
What buyers praise and complain about, mined from review topics.What buyers love
“It cleans fantastic too”
“Gets The Job Done”
“Overall, very happy with eh purchase”
“Smells amazing”
“Definitely worth the price”
“Works as advertised”
“Easy to use”
“Nice product, nice shine too”
“Helps with calcium deposits and buildup”
“They look new”
What buyers complain about
“NOT EFFECTIVE”
“not helped with rust at all”
“Horrible smell”
“Had bathtub stains”
“very difficult to clean”
“Leaks”
“Very misleading and annoying”
“Waste of money”
“Delivery instruction didnt follow”
“I noticed clr is not as powerful as I thought it would be”
Top return reasons
Common questions
- Is slate cleaner profitable to sell on Amazon United States?
- The niche generates $60K/yr across 10 tracked products. 90-day search growth is +12.0%. Flapen's verdict: Skip it (45/100).
- How competitive is the slate cleaner niche?
- 7 brands and 63 sellers compete. The top 5 products take 82% of clicks and top 5 brands hold 94% of demand.
- What do buyers complain about in slate cleaner?
- Top complaints mined from reviews: Functionality-Overall, Rusts/Corrodes, Smell. The return rate is 0.4%.
- When does demand for slate cleaner peak?
- Demand peaks in Aug–Sep; the busiest month runs 2.8× the quietest.
- What does it cost to enter the slate cleaner niche?
- Listings span $5.14–$29.55; the average listing price is $16.99 (sweet spot $15–$100). The average incumbent carries 3,138 reviews — the moat a new listing must climb.