Drain Fly Killer
Drain Fly Killer shows searches that convert (20.7% search→purchase), but prices mostly outside the sweet spot ($2.41–$9.75) keeps it on the watch list.
Flapen Score
Is Drain Fly Killer profitable on Amazon?
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.
Drain Fly Killer: the Amazon niche in one read
Everything a seller checks before entering, in three answers.
Is the demand real?
Worth a look. Search demand moved -9.2% over the last 90 days and 20.7% of searches end in a purchase.
£2.9M
revenue / yr
Who owns the niche?
The top 5 brands hold 97% of demand, so 3% of the market is open.
3%
open market share
Is there a way in?
Listing quality. The average product page scores 0/100 on content standards. Incumbents average 4.3★ — the gap to enter on.
0/100
page quality · 15 products
Top Drain Fly Killer products & what they sell for
Every tracked product — its share of the shelf, its review moat, and what it sells for.
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
- Price
- £6.06
- Rating
- 4.6/5
- Reviews
- 10,955
- Age
- 8y ago

Mr Muscle Drain Unblocker Liquid (1L) Sink & Drain Cleaner Strong & Fast Acting Heavy Duty Power Gel Dissolves Clogs (Packaging May Vary)
- Price
- £3.34
- Rating
- 4.6/5
- Reviews
- 4,181
- Age
- 8y ago

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
- Price
- £2.41
- Rating
- 4.5/5
- Reviews
- 3,406
- Age
- 10y ago

Mr Muscle Drain Unblocker Liquid (2 x 500ml) Sink & Drain Cleaner Strong & Fast Acting Heavy Duty Drain Gel Dissolves Clogs Safe for All Pipes
- Price
- £4.55
- Rating
- 4.5/5
- Reviews
- 30,168
- Age
- 6y ago

Buster Bathroom Drain Unblocker (Pack of 2 x 300ml)
- Price
- £5.21
- Rating
- 4.5/5
- Reviews
- 6,715
- Age
- 3y ago
Trending
90-day click momentum
HG Drain and Plug Unblocker | Clears Blocked Sinks & Showers | 500ml
- Price
- £5.33
- Rating
- 4.4/5
- Reviews
- 472
- Age
- 4y ago

Cillit Bang Hair Drain Unblocker Gel Dissolves Hair-Based Blockages For Showers and Baths 1 Litre (2 Uses)
- Price
- £4.03
- Rating
- 4.5/5
- Reviews
- 1,623
- Age
- 2y ago

Mr Muscle Drain Unblocker Liquid (1L) Sink & Drain Cleaner Strong & Fast Acting Heavy Duty Power Gel Dissolves Clogs (Packaging May Vary)
- Price
- £3.34
- Rating
- 4.6/5
- Reviews
- 4,181
- Age
- 8y ago

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
- Price
- £2.49
- Rating
- 4.5/5
- Reviews
- 1,144
- Age
- 3y ago

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
- Price
- £9.56
- Rating
- 3.6/5
- Reviews
- 303
- Age
- 2y ago
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
- Price
- £5.75
- Rating
- 4.1/5
- Reviews
- 704
- Age
- 1y ago

HG Drain and Plug Unblocker | Clears Blocked Sinks & Shower Drains | 1L
- Price
- £4.16
- Rating
- 4.3/5
- Reviews
- 790
- Age
- 1y ago

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
- Price
- £9.56
- Rating
- 3.6/5
- Reviews
- 303
- Age
- 2y ago

5 Litre Heavy Duty Sink & Drain Unblocker
- Price
- £9.75
- Rating
- 4.0/5
- Reviews
- 764
- Age
- 2y ago

Cillit Bang Hair Drain Unblocker Gel Dissolves Hair-Based Blockages For Showers and Baths 1 Litre (2 Uses)
- Price
- £4.03
- Rating
- 4.5/5
- Reviews
- 1,623
- Age
- 2y ago
Competition: brands, sellers & click 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%)
Drain Fly Killer demand & seasonality
Weekly search volume, with the niche's key stats alongside.
No pronounced peak months · busiest ÷ quietest = 1.3×
Top Drain Fly Killer search terms shoppers use
The exact queries shoppers type, with yearly volume, growth and conversion.
- 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
What reviews say buyers love and hate about Drain Fly Killer
What buyers mention most, as a share of all reviews.
What buyers love
88% of reviews“As described”
“Good value for money”
“Outstanding product,worked as described”
“Effective”
“Very handy”
What buyers complain about
76% of reviews“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”
Drain Fly Killer return rate & reasons
Why buyers send it back, as a share of all return requests.
0.1%
Return rate
13%
Fixable by listing
The "fixable" share counts expectation-mismatch reasons — size, look, advertised-vs-actual — that better copy and images address.
Common Drain Fly Killer questions
The questions sellers ask about this niche, answered from the tracked metrics.
Best Flapen score
The highest-scoring niches we track right now, across every category.









