ronseal 3 in 1 mould killer
Skip itSoft demand (-60.8% this quarter) — this niche doesn't clear our bar today.
Returns
Incredible0.3%return rate — above 5% kills the launch gate
Conversion
Great11.5%search→purchase rate — share of searches ending in a sale
Avg price
Great£17.25avg listing price — sweet spot $15–$100
Price range
Great£4.19–£51.72cheapest to priciest tracked listing — scored on the share inside $15–$100
Quality gap
Okay4.5★avg incumbent rating — lower means beatable quality
Review moat
Bad6,436.89avg incumbent reviews — the moat a new listing must climb
Competition
Bad87%top-5 click share — a locked-up shelf
Market size
Bad£29K£29K/yr · 15K searches
Growth
Bad-60.8%90-day search growth — must beat 0% to launch
Brand share
Bad100%top-5 brand share — brand-locked demand
According to Flapen's Amazon United Kingdom niche tracking, ronseal 3 in 1 mould killer is a £29K/yr Amazon United Kingdom market (15K searches/yr). The top 5 brands hold 100% of demand. Demand peaks in Jan–Feb–Nov–Dec. Verdict: Skip it — 35/100.
Data updated Jul 22, 2026 · scored weekly · How we score niches
ronseal 3 in 1 mould killer market data
- Units sold / yr
- 2K–3K
- avg 250–500/product
- Revenue / yr
- £35K–£43K
- units × avg price
- Conversion rate
- 11.5%
- Avg BSR
- #49
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 89%
- Out of stock
- 0.0%
- Avg brand age
- 64 months
- Avg seller age
- 191 days
Competition & brand share
The top 5 products capture 87% of clicks — a locked-up shelf that new listings rarely crack.Brands
4 flat
Sellers
44
Top-5 brand share
100%
Top 20: 100%
Top-5 click share
87%
Top 20: 100%
Open market
0%
- Dryzone83%
- Polar Specialist Coatings6%
- HG6%
- Pro-Kleen5%
- Open — no brand owns it (0%)
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — -60.8% search growth over the last 90 days.Peak months: Jan, Feb, Nov, Dec · busiest ÷ quietest = 4.3×
Top ronseal 3 in 1 mould killer search terms
- dryzone mould remover9K/yr
- damp spray3K/yr
- dry zone mould remover2K/yr
Top ronseal 3 in 1 mould killer 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 9 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Dryzone Mould Remover and Prevention Kit (3 x 450ml spray) The definitive long-term solution to Mould. Dual-Action Mould Remover & Sanitiser Spray.
Dryzone£20.794.5★2,939 rev
Dryzone Mould Remover (5L) Scrub-Free Formula Eliminates Mould & Mildew Immediately
Dryzone£20.824.5★214 rev
Dryzone Anti-Mould Paint Additive 100ml Concentrate - Makes Up to 5L of Emulsion Vinyl Silk & Matt Paint Mould Resistant - Prevents Black Mould Growth for Up to 5 Years
Dryzone£9.184.6★2,311 rev
Polar Damp & Stain Block Spray - 500ml Matt White - Covers Damp Mould Grease Nicotine & Rust Stains - Anti Mould & Damp Proof Paint for Internal Walls & Ceilings - Dries in 10 Min Low Odour
Polar Specialist Coatings£10.124.3★3,347 rev
Dryzone Mould Sanitiser (450ml) - The Ultimate Defence Against Mould and Biological Growth (450ml Mould Sanitiser)
Dryzone£10.954.5★214 rev
Newest
by launch date
Pro-Kleen Damp & Stain Block Spray Paint Primer White Matt 400ml - Covers Damp Mould Grease Nicotine & Rust Stains - for Walls & Ceilings - Leaves a Waterproof Barrier
Pro-Kleen£6.71439 rev
Dryzone Mould Sanitiser (450ml) - The Ultimate Defence Against Mould and Biological Growth (450ml Mould Sanitiser)
Dryzone£10.95214 rev
Dryzone Mould Remover (5L) Scrub-Free Formula Eliminates Mould & Mildew Immediately
Dryzone£20.82214 rev
Dryzone Mould Remover and Prevention Kit (2 x 5L & Sprayer) The Definitive Long-Term Solution to Mould. Dual-Action Mould Remover & Sanitiser Spray.
Dryzone£51.72143 rev
Polar Damp & Stain Block Spray - 500ml Matt White - Covers Damp Mould Grease Nicotine & Rust Stains - Anti Mould & Damp Proof Paint for Internal Walls & Ceilings - Dries in 10 Min Low Odour
Polar Specialist Coatings£10.123,347 rev
Trending
90-day click momentumPro-Kleen Damp & Stain Block Spray Paint Primer White Matt 400ml - Covers Damp Mould Grease Nicotine & Rust Stains - for Walls & Ceilings - Leaves a Waterproof Barrier
Pro-Kleen£6.714.3★
Polar Damp & Stain Block Spray - 500ml Matt White - Covers Damp Mould Grease Nicotine & Rust Stains - Anti Mould & Damp Proof Paint for Internal Walls & Ceilings - Dries in 10 Min Low Odour
Polar Specialist Coatings£10.124.3★
Dryzone Mould Remover and Prevention Kit (2 x 5L & Sprayer) The Definitive Long-Term Solution to Mould. Dual-Action Mould Remover & Sanitiser Spray.
Dryzone£51.724.6★
Dryzone Anti-Mould Paint Additive 100ml Concentrate - Makes Up to 5L of Emulsion Vinyl Silk & Matt Paint Mould Resistant - Prevents Black Mould Growth for Up to 5 Years
Dryzone£9.184.6★
Dryzone Mould Remover (5L) Scrub-Free Formula Eliminates Mould & Mildew Immediately
Dryzone£20.824.5★
What buyers say about ronseal 3 in 1 mould killer
What buyers praise and complain about, mined from review topics.What buyers love
“very good and more effective than many other brands”
“Good cleaning”
“Does the job”
“Does exactly as described and more”
“Overall, this spray is practical, efficient, and reliable”
“Good value for money”
“ease of removal”
“Very effective & instant results”
“Smell is very strong”
“Application is dead easy you literally just spray it on”
What buyers complain about
“Smell is awful”
“Didnt do anything”
“Waste of money”
“no amount of scrubbing would make it any better”
“Wall was black”
“it just stained our front room walls so not happy at all”
“Looks like water drops captured inside paint”
“Arrived damaged & leaking”
“Less Effective Than the Reputation Suggests”
“Poor cheap nozzles making the product impossible to use”
Top return reasons
Common questions
- Is ronseal 3 in 1 mould killer profitable to sell on Amazon United Kingdom?
- The niche generates £29K/yr across 9 tracked products. 90-day search growth is -60.8%. Flapen's verdict: Skip it (35/100).
- How competitive is the ronseal 3 in 1 mould killer niche?
- 4 brands and 44 sellers compete. The top 5 products take 87% of clicks and top 5 brands hold 100% of demand.
- What do buyers complain about in ronseal 3 in 1 mould killer?
- Top complaints mined from reviews: Smell, Functionality-Overall, Value For Money. The return rate is 0.3%.
- When does demand for ronseal 3 in 1 mould killer peak?
- Demand peaks in Jan–Feb–Nov–Dec; the busiest month runs 4.3× the quietest.
- What does it cost to enter the ronseal 3 in 1 mould killer niche?
- Listings span £4.19–£51.72; the average listing price is £17.25 (sweet spot $15–$100). The average incumbent carries 6,437 reviews — the moat a new listing must climb.