drain bladder
Worth a lookShows searches that convert (8.7% search→purchase), but brand-locked demand (top 5 brands take 96% of clicks) keeps it on the watch list.
Conversion
Great8.7%search→purchase rate — share of searches ending in a sale
Quality gap
Great4.2★avg incumbent rating — lower means beatable quality
Avg price
Great$17.81avg listing price — sweet spot $15–$100
Price range
Great$8.64–$33.60cheapest to priciest tracked listing — scored on the share inside $15–$100
Review moat
Good822.77avg incumbent reviews — the moat a new listing must climb
Growth
Good+20.9%90-day search growth — must beat 0% to launch
Returns
Okay3.2%return rate — above 5% kills the launch gate
Market size
Okay$209K$209K/yr · 135K searches
Competition
Bad75%top-5 click share — a locked-up shelf
Brand share
Bad96%top-5 brand share — brand-locked demand
According to Flapen's Amazon United States niche tracking, drain bladder is a $209K/yr Amazon United States market (135K searches/yr). The top 5 brands hold 96% of demand. Verdict: Worth a look — 50/100.
Data updated Jul 27, 2026 · scored weekly · How we score niches
drain bladder market data
- Units sold / yr
- 13K–15K
- avg 750–1,000/product
- Revenue / yr
- $223K–$267K
- units × avg price
- Conversion rate
- 8.7%
- Avg BSR
- #109
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 100%
- Out of stock
- 0.0%
- Avg brand age
- 54 months
- Avg seller age
- 176 days
Competition & brand share
The top 5 products capture 75% of clicks — a locked-up shelf that new listings rarely crack.Brands
7 falling
Sellers
56
Top-5 brand share
96%
Top 20: 100%
Top-5 click share
75%
Top 20: 100%
Open market
2%
- Drain King39%
- Fosenlion34%
- DURATECH13%
- Senshare6%
- Devvicoo4%
- Ketofa2%
- Open — no brand owns it (1 brand, 2%)
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — +20.9% search growth over the last 90 days.No pronounced peak months · busiest ÷ quietest = 1.5×
Top drain bladder search terms
- drain bladder37K/yr
- drain king22K/yr
- drain cleaning bladder17K/yr
- drain bladder unclogger13K/yr
- pool line unclogger9K/yr
- drain king bladder6K/yr
- drain king drain unclogger8K/yr
- sewer bladder5K/yr
- drain bladder kit4K/yr
- clog buster4K/yr
Top drain bladder 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 13 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Fosenlion 3 Pcs Drain Bladder Kit Drain Cleaning Bladder Fits 1 to 6 Pipes Rubber Drain Bladder Unclogger for Bathroom Sinks Showers Swimming Pool Drains Kitchen Sinks and Main Drains
Fosenlion$20.054.1★439 rev
Drain King 186 Unclogs Bathroom Sinks Showers and Swimming Pool Drains 1.5 to 3 Inch
Drain King$14.634.4★3,433 rev
DURATECH Drain Bladder Medium Drain Cleaning Bladder
DURATECH$11.094.2★610 rev
3-Pack Drain Bladder Kit Water-Powered Rubber Drain Cleaning Bladder Fits 1 to 6 Inch Pipes Ideal for Clearing Bathroom Sinks Showers Swimming Pool Drains Kitchen Sinks and Main Drains Clogs
Senshare$19.454.1★165 rev
Drain King H34 Unclogs Sewer Lines Main and Outside Deck Drains 3 To 4 Inch
Drain King$20.324.5★1,360 rev
Newest
by launch date
Ketofa Drain Cleaning Bladder Kit 1-6 Inch Rubber Bladders 3 Pack
Ketofa$18.4743 rev
Devvicoo 3 PCS Drain Cleaning Bladder Kit Fits 1 to 6 Pipes Water Pressure Unclogger for Bathroom Sinks Showers Swimming Pools Kitchen Sinks Main Drains
Devvicoo$16.0663 rev
3 Pcs Drain Bladder Kit Drain Cleaning Bladder Fits 1 to 6 Pipes with 10 ft Retractable Hose Shut-Off Valve & Brass Faucet Adapter Fits Most Faucets For Sinks Showers Pools & Drains (Black)
Fosenlion$33.60102 rev
3-Pack Drain Bladder Kit Water-Powered Rubber Drain Cleaning Bladder Fits 1 to 6 Inch Pipes Ideal for Clearing Bathroom Sinks Showers Swimming Pool Drains Kitchen Sinks and Main Drains Clogs
Senshare$19.45165 rev
Fosenlion 3 Pcs Drain Bladder Kit Drain Cleaning Bladder Fits 1 to 6 Pipes Rubber Drain Bladder Unclogger for Bathroom Sinks Showers Swimming Pool Drains Kitchen Sinks and Main Drains
Fosenlion$20.05439 rev
Trending
90-day click momentumKetofa Drain Cleaning Bladder Kit 1-6 Inch Rubber Bladders 3 Pack
Ketofa$18.473.7★
DURATECH Drain Bladder Medium Drain Cleaning Bladder
DURATECH$11.094.2★
DURATECH Drain Bladder Large Drain Cleaning Bladder
DURATECH$15.394.2★
Drain King 186 Unclogs Bathroom Sinks Showers and Swimming Pool Drains 1.5 to 3 Inch
Drain King$14.634.4★
Fosenlion 3 Pcs Drain Bladder Kit Drain Cleaning Bladder Fits 1 to 6 Pipes Rubber Drain Bladder Unclogger for Bathroom Sinks Showers Swimming Pool Drains Kitchen Sinks and Main Drains
Fosenlion$20.054.1★
What buyers say about drain bladder
What buyers praise and complain about, mined from review topics.What buyers love
“Worth every penny”
“Works as advertised”
“worked very quickly”
“Excellent tool”
“Easy to use”
“I can see it working well for many people with easier clogs or stronger water pressure”
“CLEANED IT RIGHT UP”
“- Good build quality and seems durable”
“Inexpensive alternative for tough kitchen grease clog in pvc pipe”
“PSI was within acceptable range”
What buyers complain about
“Broken”
“It works for pool skimmer clog”
“Where is the quality control”
“Extremely disappointing amount of expansion means you can only effectively use this in pipes with an ID very close the the unpressurized OD's of the bladders”
“insert it into a drain below any adjoining drain line it will blow out the blockage in about ten seconds as soon as you turn on the water to the hose”
“Junk product and weak bladder”
“No manual included”
“it blew up inside the pipe before i even had the water on halfway”
“Waste of time and money”
“Bladder had a hole in it at connection”
Top return reasons
Common questions
- Is drain bladder profitable to sell on Amazon United States?
- The niche generates $209K/yr across 13 tracked products. 0 of 2 products launched in the last 360 days are still selling. 90-day search growth is +20.9%. Flapen's verdict: Worth a look (50/100).
- How competitive is the drain bladder niche?
- 7 brands and 56 sellers compete. The top 5 products take 75% of clicks and top 5 brands hold 96% of demand.
- What do buyers complain about in drain bladder?
- Top complaints mined from reviews: Durability, Jamming/Clogging, Quality-Overall. The return rate is 3.2%.
- When does demand for drain bladder peak?
- Demand is steady year-round — the busiest month runs 1.5× the quietest.
- What does it cost to enter the drain bladder niche?
- Listings span $8.64–$33.60; the average listing price is $17.81 (sweet spot $15–$100). The average incumbent carries 823 reviews — the moat a new listing must climb.