shower stain remover
Worth a lookShows low returns (0.8%), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Returns
Incredible0.8%return rate — above 5% kills the launch gate
Avg price
Incredible$24.05avg listing price — sweet spot $15–$100
Conversion
Great8.9%search→purchase rate — share of searches ending in a sale
Price range
Great$8.87–$39.87cheapest to priciest tracked listing — scored on the share inside $15–$100
Quality gap
Great4.3★avg incumbent rating — lower means beatable quality
Growth
Good+41.4%90-day search growth — must beat 0% to launch
Competition
Good50%top-5 click share — leaders hold, buyers still browse
Review moat
Bad7,808avg incumbent reviews — the moat a new listing must climb
Brand share
Bad94%top-5 brand share — brand-locked demand
Market size
Bad$43K$43K/yr · 20K searches
According to Flapen's Amazon United States niche tracking, shower stain remover is a $43K/yr Amazon United States market (20K searches/yr). The top 5 brands hold 94% of demand. Demand peaks in Jul–Aug–Sep. Verdict: Worth a look — 57/100.
Data updated Jul 21, 2026 · scored weekly · How we score niches
shower stain remover market data
- Units sold / yr
- 2K–2K
- avg 0–100/product
- Revenue / yr
- $36K–$48K
- units × avg price
- Conversion rate
- 8.9%
- Avg BSR
- #110
- Page quality
- 0%
- Prime
- 96%
- Sponsored
- 89%
- Out of stock
- 0.0%
- Avg brand age
- 105 months
- Avg seller age
- 165 days
Competition & brand share
The top 5 products take 50% of clicks — established leaders, but buyers still shop beyond them.Brands
9 falling
Sellers
77
Top-5 brand share
94%
Top 20: 100%
Top-5 click share
50%
Top 20: 94%
Open market
3%
- 30 SECONDS32%
- Wet & Forget26%
- RMR Brands17%
- Home Armor11%
- Moldex8%
- Mold Armor3%
- Open — no brand owns it (3 brands, 3%)
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — +41.4% search growth over the last 90 days.Peak months: Jul, Aug, Sep · busiest ÷ quietest = 2.4×
Top shower stain remover search terms
- outdoor mold remover4K/yr
- deck mold and mildew remover4K/yr
- concrete mold remover4K/yr
- outdoor mildew removal spray2K/yr
- algae remover for concrete3K/yr
- outdoor mildew and mold remover3K/yr
Top shower stain remover 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 24 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
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
Wet & Forget Outdoor Moss Mold Mildew & Algae Stain Remover Multi-Surface Cleaner Ready to Use 64 Ounce
Wet & Forget$19.094.1★14,739 rev
Wet & Forget Moss Mold Mildew & Algae Stain Remover Multi-Surface Outdoor Cleaner Concentrate Original 128 Fluid Ounces
Wet & Forget$34.104.3★2,141 rev
30 SECONDS Outdoor Cleaner 2 Pack with Hose End Sprayer - Cleans Stains from Algae Mold and Mildew on Vinyl Siding Deck Patio Brick and More
30 SECONDS$37.514.1★9,405 rev
RMR-86 Pro Contractor Grade Mold Stain & Mildew Stain Remover Cleaning Solution Professional Quality Formula 1 Gallon
RMR Brands$34.634.5★7,162 rev
Newest
by launch date
Moldex Instant Outdoor Cleaner with Bleach Combo Pack 1 Gallon Refill + 64 oz Hose End Sprayer Fast Acting Outdoor Surface Cleaner for Siding Decks Fences and Exterior Surfaces
Moldex$23.0337 rev
Moldex Instant Outdoor Cleaner Concentrate with Bleach 1 Gallon Fast Acting Solution for Mold and Mildew Stains on Siding Decks Fences and Exterior Surfaces
Moldex$11.3354 rev
Moldex Instant Outdoor Cleaner with Bleach and Hose End 64 oz Fast Acting Spray for Mold and Mildew Stains on Siding Decks Fences and Exterior Surfaces
Moldex$14.94113 rev
Moldex Mold & Mildew Surface Stain Cleaner with Bleach 32 oz Fast Acting Spray for Tile Grout Siding and Outdoor Surfaces
Moldex$8.8732 rev
Home Armor Outdoor Cleaner+ 64 oz. Remove Stains from Mold Mildew Algae Dirt and Grime for Visible Results in Seconds No Scrubbing Required Plant Safe When Used as Directed
Home Armor$13.64364 rev
Trending
90-day click momentumMoldex Instant Outdoor Cleaner with Bleach Combo Pack 1 Gallon Refill + 64 oz Hose End Sprayer Fast Acting Outdoor Surface Cleaner for Siding Decks Fences and Exterior Surfaces
Moldex$23.034.4★
Moldex Instant Outdoor Cleaner Concentrate with Bleach 1 Gallon Fast Acting Solution for Mold and Mildew Stains on Siding Decks Fences and Exterior Surfaces
Moldex$11.334.1★
Moldex Instant Outdoor Cleaner with Bleach and Hose End 64 oz Fast Acting Spray for Mold and Mildew Stains on Siding Decks Fences and Exterior Surfaces
Moldex$14.944.0★
Moldex Mold & Mildew Surface Stain Cleaner with Bleach 32 oz Fast Acting Spray for Tile Grout Siding and Outdoor Surfaces
Moldex$8.874.5★
Concrobium Mold Control 1 Gallon Mold and Mildew Cleaner for Hard Surfaces Helps Eliminate and Prevent Mold and Musty Odors No Bleach Formula for Indoor and Outdoor Use
Concrobium$36.984.5★
What buyers say about shower stain remover
What buyers praise and complain about, mined from review topics.What buyers love
“It cleans up nice”
“Amazing quality”
“Works perfectly”
“Better than I expected”
“Easy To Use”
“Money well spent”
“it smells good”
“Amazing spray”
“Powerful stuff”
“Looks brand New”
What buyers complain about
“it never worked”
“It does have a very chemical smell”
“Arrived leaking”
“Worst cleaner ever bought”
“A little pricey”
“will stain your clothes”
“Product won't spray”
“Misleading pictures”
“not quality”
“Water mixed with blue dye”
Top return reasons
Common questions
- Is shower stain remover profitable to sell on Amazon United States?
- The niche generates $43K/yr across 28 tracked products. 4 of 4 products launched in the last 360 days are still selling. 90-day search growth is +41.4%. Flapen's verdict: Worth a look (57/100).
- How competitive is the shower stain remover niche?
- 9 brands and 77 sellers compete. The top 5 products take 50% of clicks and top 5 brands hold 94% of demand.
- What do buyers complain about in shower stain remover?
- Top complaints mined from reviews: Functionality-Overall, Smell, Leak-Proof. The return rate is 0.8%.
- When does demand for shower stain remover peak?
- Demand peaks in Jul–Aug–Sep; the busiest month runs 2.4× the quietest.
- What does it cost to enter the shower stain remover niche?
- Listings span $8.87–$39.87; the average listing price is $24.05 (sweet spot $15–$100). The average incumbent carries 7,808 reviews — the moat a new listing must climb.