drain fly killer
Worth a lookShows searches that convert (20.7% search→purchase), but prices mostly outside the sweet spot ($2.41–$9.75) keeps it on the watch list.
Conversion
Incredible20.7%search→purchase rate — share of searches ending in a sale
Returns
Incredible0.1%return rate — above 5% kills the launch gate
Market size
Incredible£2.9M£2.9M/yr · 2.7M searches
Quality gap
Good4.3★avg incumbent rating — lower means beatable quality
Review moat
Bad5,393.13avg incumbent reviews — the moat a new listing must climb
Growth
Bad-9.2%90-day search growth — must beat 0% to launch
Competition
Bad77%top-5 click share — a locked-up shelf
Avg price
Bad£5.25avg listing price — sweet spot $15–$100
Brand share
Bad97%top-5 brand share — brand-locked demand
Price range
Bad£2.41–£9.75cheapest to priciest tracked listing — scored on the share inside $15–$100
According to Flapen's Amazon United Kingdom niche tracking, drain fly killer is a £2.9M/yr Amazon United Kingdom market (2.7M searches/yr). The top 5 brands hold 97% of demand. Verdict: Worth a look — 50/100.
Data updated Jul 24, 2026 · scored weekly · How we score niches
drain fly killer market data
- Units sold / yr
- 500K–600K
- avg 30,000–40,000/product
- Revenue / yr
- £2.6M–£3.1M
- units × avg price
- Conversion rate
- 20.7%
- Avg BSR
- #10
- Page quality
- 0%
- Prime
- 87%
- Sponsored
- 100%
- Out of stock
- 0.0%
- Avg brand age
- 38 months
- Avg seller age
- 168 days
Competition & brand share
The top 5 products capture 77% of clicks — a locked-up shelf that new listings rarely crack.Brands
7 rising
Sellers
117
Top-5 brand share
97%
Top 20: 100%
Top-5 click share
77%
Top 20: 100%
Open market
1%
- Mr Muscle73%
- Buster14%
- HG6%
- Cillit Bang2%
- MultiWare2%
- STORM TRADING GROUP1%
- Open — no brand owns it (1 brand, 1%)
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — -9.2% search growth over the last 90 days.No pronounced peak months · busiest ÷ quietest = 1.3×
Top drain fly killer search terms
- drain unblocker1.2M/yr
- sink unblocker432K/yr
- drain cleaner317K/yr
- mr muscle drain unblocker217K/yr
- mr muscle82K/yr
- shower drain unblocker62K/yr
- drain cleaners and unblockers48K/yr
- sink cleaner40K/yr
- kitchen sink unblocker43K/yr
- bathroom drain unblocker34K/yr
Top drain fly 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 15 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Mr Muscle Drain Unblocker Liquid (2 x 1L) Sink & Drain Cleaner Strong & Fast Acting Heavy Duty Gel Formula Dissolves Clogs Works 3x Better Than Bleach Safe for All Pipes
Mr Muscle£6.064.6★10,955 rev
Mr Muscle Drain Unblocker Liquid (1L) Sink & Drain Cleaner Strong & Fast Acting Heavy Duty Power Gel Dissolves Clogs (Packaging May Vary)
Mr Muscle£3.344.6★4,181 rev
Mr Muscle Drain Unblocker Liquid (500ml) Sink & Drain Cleaner Strong & Fast Acting Heavy Duty Drain Gel Dissolves Clogs Works 3x Better Than Bleach Safe for All Pipes
Mr Muscle£2.414.5★3,406 rev
Mr Muscle Drain Unblocker Liquid (2 x 500ml) Sink & Drain Cleaner Strong & Fast Acting Heavy Duty Drain Gel Dissolves Clogs Safe for All Pipes
Mr Muscle£4.554.5★30,168 rev
Buster Bathroom Drain Unblocker (Pack of 2 x 300ml)
Buster£5.214.5★6,715 rev
Newest
by launch date
6 PCS Drain Unblocker Tools Hair Clog Remover Sink Snake Drain Multifunctional Plumbing Tools Reusable for Bathroom Toilet Kitchen Plug Hole
Keratobleem£5.75704 rev
HG Drain and Plug Unblocker | Clears Blocked Sinks & Shower Drains | 1L
HG£4.16790 rev
MultiWare 5 Litre Drain Unblocker | Heavy Duty Sink & Drain Cleaner for Plug Holes Toilets Showers & Pipes | Powerful Toilet & Sink Unblocker for Home Office Garage & Shops | Cleaning Supplies
MultiWare£9.56303 rev
5 Litre Heavy Duty Sink & Drain Unblocker
STORM TRADING GROUP£9.75764 rev
Cillit Bang Hair Drain Unblocker Gel Dissolves Hair-Based Blockages For Showers and Baths 1 Litre (2 Uses)
Cillit Bang£4.031,623 rev
Trending
90-day click momentum
HG Drain and Plug Unblocker | Clears Blocked Sinks & Showers | 500ml
HG£5.334.4★
Cillit Bang Hair Drain Unblocker Gel Dissolves Hair-Based Blockages For Showers and Baths 1 Litre (2 Uses)
Cillit Bang£4.034.5★
Mr Muscle Drain Unblocker Liquid (1L) Sink & Drain Cleaner Strong & Fast Acting Heavy Duty Power Gel Dissolves Clogs (Packaging May Vary)
Mr Muscle£3.344.6★
Mr Muscle Kitchen Drain Unblocker Liquid (500ml) Sink & Drain Cleaner Strong & Fast Acting Heavy Duty Gel Dissolves Clogs Works 3x Better Than Bleach Safe for All Pipes
Mr Muscle£2.494.5★
MultiWare 5 Litre Drain Unblocker | Heavy Duty Sink & Drain Cleaner for Plug Holes Toilets Showers & Pipes | Powerful Toilet & Sink Unblocker for Home Office Garage & Shops | Cleaning Supplies
MultiWare£9.563.6★
What buyers say about drain fly killer
What buyers praise and complain about, mined from review topics.What buyers love
“As described”
“Good value for money”
“Outstanding product,worked as described”
“Effective”
“Very handy”
“Good cleaner”
“with fresh scent”
“look very steady”
“The instructions were clear”
“WORKS VERY WELL ON OUR SHOWER DRAIN THANKS TO ALL”
What buyers complain about
“Not worked with me”
“Poor product at the price”
“Useless product”
“seems to break down the clog fairly quickly”
“It does have a bad smell”
“Doesnt do whats it says”
“Waste of money did follow the instructions how to use”
“Waste”
“The plastic barbs are quite brittle”
“broke on the first use”
Top return reasons
Common questions
- Is drain fly killer profitable to sell on Amazon United Kingdom?
- The niche generates £2.9M/yr across 15 tracked products. 90-day search growth is -9.2%. Flapen's verdict: Worth a look (50/100).
- How competitive is the drain fly killer niche?
- 7 brands and 117 sellers compete. The top 5 products take 77% of clicks and top 5 brands hold 97% of demand.
- What do buyers complain about in drain fly killer?
- Top complaints mined from reviews: Functionality-Overall, Value For Money, Quality-Overall. The return rate is 0.1%.
- When does demand for drain fly killer peak?
- Demand is steady year-round — the busiest month runs 1.3× the quietest.
- What does it cost to enter the drain fly killer niche?
- Listings span £2.41–£9.75; the average listing price is £5.25 (sweet spot $15–$100). The average incumbent carries 5,393 reviews — the moat a new listing must climb.