mildew cleaner foam
Skip itSoft demand (-51.6% this quarter) — this niche doesn't clear our bar today.
Returns
Incredible0.2%return rate — above 5% kills the launch gate
Conversion
Incredible17.6%search→purchase rate — share of searches ending in a sale
Market size
Great£1.1M£1.1M/yr · 1.6M searches
Quality gap
Okay4.6★avg incumbent rating — lower means beatable quality
Review moat
Bad15,990.6avg incumbent reviews — the moat a new listing must climb
Avg price
Bad£4.10avg listing price — sweet spot $15–$100
Growth
Bad-51.6%90-day search growth — must beat 0% to launch
Competition
Bad100%top-5 click share — a locked-up shelf
Brand share
Bad100%top-5 brand share — brand-locked demand
Price range
Bad£2.81–£5.28cheapest to priciest tracked listing — scored on the share inside $15–$100
According to Flapen's Amazon United Kingdom niche tracking, mildew cleaner foam is a £1.1M/yr Amazon United Kingdom market (1.6M searches/yr). The top 5 brands hold 100% of demand. Demand peaks in Jan–Feb–Nov. Verdict: Skip it — 36/100.
Data updated Jul 24, 2026 · scored weekly · How we score niches
mildew cleaner foam market data
- Units sold / yr
- 250K–300K
- avg 30,000–40,000/product
- Revenue / yr
- £1.0M–£1.2M
- units × avg price
- Conversion rate
- 17.6%
- Avg BSR
- #6
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 100%
- Out of stock
- 0.0%
- Avg brand age
- 44 months
- Avg seller age
- 168 days
Competition & brand share
The top 5 products capture 100% of clicks — a locked-up shelf that new listings rarely crack.Brands
4 rising
Sellers
110
Top-5 brand share
100%
Top 20: 100%
Top-5 click share
100%
Top 20: 100%
Open market
0%
- HG69%
- Cillit Bang23%
- UNDO5%
- Astonish3%
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — -51.6% search growth over the last 90 days.Peak months: Jan, Feb, Nov · busiest ÷ quietest = 2.8×
Top mildew cleaner foam search terms
- mould remover444K/yr
- hg mould spray269K/yr
- mould spray211K/yr
- mold remover spray127K/yr
- black mould remover70K/yr
- mould and mildew remover61K/yr
- mould50K/yr
- hg mould remover spray54K/yr
- mould remover spray35K/yr
- anti mould spray39K/yr
Top mildew cleaner foam 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 5 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
HG Mould Remover Spray | Kills Black Mold & Mildew on Walls & Tiles | 500ml
HG£4.194.6★44,310 rev
Cillit Bang Black Mould Remover 750ml Effortless Shine for Damp Areas
Cillit Bang£2.814.6★1,958 rev
HG Mould Remover Foam Spray Black Mould & Mildew Cleaner Removes Stains 500ml
HG£4.724.5★29,905 rev
Undo Mould Remover Spray (500 ml) | Fast-Acting Active Powerful Cleaner for Black Mould Mildew & Stains on Tiles Walls Ceilings Bathroom Kitchen
UNDO£5.284.6★258 rev
Astonish Specialist Extra Strength Mould & Mildew Stain Blaster Spray 750ml Fast Acting Mould Remover & Bathroom Cleaner for Tiles Grout & Shower Areas
Astonish£3.514.5★3,522 rev
Newest
by launch dateUndo Mould Remover Spray (500 ml) | Fast-Acting Active Powerful Cleaner for Black Mould Mildew & Stains on Tiles Walls Ceilings Bathroom Kitchen
UNDO£5.28258 rev
Astonish Specialist Extra Strength Mould & Mildew Stain Blaster Spray 750ml Fast Acting Mould Remover & Bathroom Cleaner for Tiles Grout & Shower Areas
Astonish£3.513,522 rev
HG Mould Remover Foam Spray Black Mould & Mildew Cleaner Removes Stains 500ml
HG£4.7229,905 rev
Cillit Bang Black Mould Remover 750ml Effortless Shine for Damp Areas
Cillit Bang£2.811,958 rev
HG Mould Remover Spray | Kills Black Mold & Mildew on Walls & Tiles | 500ml
HG£4.1944,310 rev
Trending
90-day click momentumCillit Bang Black Mould Remover 750ml Effortless Shine for Damp Areas
Cillit Bang£2.814.6★
Undo Mould Remover Spray (500 ml) | Fast-Acting Active Powerful Cleaner for Black Mould Mildew & Stains on Tiles Walls Ceilings Bathroom Kitchen
UNDO£5.284.6★
HG Mould Remover Spray | Kills Black Mold & Mildew on Walls & Tiles | 500ml
HG£4.194.6★
HG Mould Remover Foam Spray Black Mould & Mildew Cleaner Removes Stains 500ml
HG£4.724.5★
Astonish Specialist Extra Strength Mould & Mildew Stain Blaster Spray 750ml Fast Acting Mould Remover & Bathroom Cleaner for Tiles Grout & Shower Areas
Astonish£3.514.5★
What buyers say about mildew cleaner foam
What buyers praise and complain about, mined from review topics.What buyers love
“very good and more effective than many other brands”
“Does the job”
“Easy to use and rinse off,”
“Good value for money”
“Works as it says”
“Overall, this spray is practical, efficient, and reliable”
“ease of removal”
“Good and smelly”
“It's powerful”
“This product is effective when applied”
What buyers complain about
“Smell is awful”
“Does not do as it says”
“Not great as quite expensive”
“normally I would have had to clean it again by now”
“A few heavily stained areas needed to be treated 2 or 3 times”
“it was completely white as if nothing had happened”
“Rubbish”
“some of the six bottles did leak”
“Couldnt use it at all”
“Mould is gone within a few minutes”
Top return reasons
Common questions
- Is mildew cleaner foam profitable to sell on Amazon United Kingdom?
- The niche generates £1.1M/yr across 5 tracked products. 1 of 1 products launched in the last 360 days are still selling. 90-day search growth is -51.6%. Flapen's verdict: Skip it (36/100).
- How competitive is the mildew cleaner foam niche?
- 4 brands and 110 sellers compete. The top 5 products take 100% of clicks and top 5 brands hold 100% of demand.
- What do buyers complain about in mildew cleaner foam?
- Top complaints mined from reviews: Smell, Functionality-Overall, Value For Money. The return rate is 0.2%.
- When does demand for mildew cleaner foam peak?
- Demand peaks in Jan–Feb–Nov; the busiest month runs 2.8× the quietest.
- What does it cost to enter the mildew cleaner foam niche?
- Listings span £2.81–£5.28; the average listing price is £4.10 (sweet spot $15–$100). The average incumbent carries 15,991 reviews — the moat a new listing must climb.