Is mouthwash cup profitable to sell on Amazon United States?

The niche generates $46K/yr across 44 tracked products. 3 of 8 products launched in the last 360 days are still selling. 90-day search growth is -12.8%. Flapen's verdict: Worth a look (51/100).

How competitive is the mouthwash cup niche?

36 brands and 57 sellers compete. The top 5 products take 44% of clicks and top 5 brands hold 51% of demand.

What do buyers complain about in mouthwash cup?

Top complaints mined from reviews: Size-Overall, Durability, Quality-Overall. The return rate is 0.8%.

When does demand for mouthwash cup peak?

Demand is steady year-round — the busiest month runs 1.5× the quietest.

What does it cost to enter the mouthwash cup niche?

Listings span $4.87–$29.95; the average listing price is $10.79 (sweet spot $15–$100). The average incumbent carries 1,262 reviews — the moat a new listing must climb.

Mouthwash Cup

Worth a look

Shows low returns (0.8%), but a small market ($46K/yr) keeps it on the watch list.

Returns

Incredible0.8%

return rate — above 5% kills the launch gate

Brand share

Great51%

top-5 brand share — no brand owns this niche

Conversion

Great7.2%

search→purchase rate — share of searches ending in a sale

Competition

Good44%

top-5 click share — leaders hold, buyers still browse

Price range

Good$4.87–$29.95

cheapest to priciest tracked listing — scored on the share inside $15–$100

Review moat

Good1,261.64

avg incumbent reviews — the moat a new listing must climb

Avg price

Okay$10.79

avg listing price — sweet spot $15–$100

Quality gap

Okay4.6★

avg incumbent rating — lower means beatable quality

Growth

Bad-12.8%

90-day search growth — must beat 0% to launch

Market size

Bad$46K

$46K/yr · 59K searches

Signals No Dominant Brand

Is mouthwash cup profitable on Amazon?

According to Flapen's Amazon United States niche tracking, mouthwash cup is a $46K/yr Amazon United States market (59K searches/yr). The top 5 brands hold 51% of demand. Verdict: Worth a look — 51/100.

Data updated Jul 13, 2026 · scored weekly · How we score niches

mouthwash cup market size & sales

Units sold, revenue, conversion and listing quality across the tracked shelf.

Units sold / yr: 3K–4K; avg 0–100/product
Revenue / yr: $32K–$43K; units × avg price
Conversion rate: 7.2%
Avg BSR: #492
Page quality: 0%
Prime: 100%
Sponsored: 86%
Out of stock: 0.5%
Avg brand age: 37 months
Avg seller age: 159 days

Competition: brands, sellers & click share

The top 5 products take 44% of clicks — established leaders, but buyers still shop beyond them.

Brands

36 falling

Sellers

Top-5 brand share

51%

Top 20: 84%

Top-5 click share

44%

Top 20: 74%

Open market

45%

RACETOP17%
Brandon-super10%
BONLONG10%
Amazon Basics9%
YEEHAW6%
MOUMOULIFE4%

mouthwash cup demand & seasonality

Weekly Amazon search volume, last 104 weeks — -12.8% search growth over the last 90 days.

No pronounced peak months · busiest ÷ quietest = 1.5×

Open Trend

Top mouthwash cup search terms shoppers use

The exact queries shoppers type, with yearly volume, growth and conversion.

mouthwash cup27K/yr -11.9%3.7% conv.
dental cups9K/yr -23.3%6.3% conv.
mouth wash cup6K/yr -2.8%3.4% conv.
paper shot cups5K/yr +15.2%7.8% conv.
2 oz bathroom cups4K/yr -28.0%5.4% conv.
3 oz3K/yr -0.4%1.9% conv.
3oz3K/yr -0.6%1.2% conv.
small water cups disposable 3 oz2K/yr -67.0%3.4% conv.

All search terms

Top mouthwash cup products & what they sell for

Every tracked product — its share of the shelf, its review moat, and what it sells for.

Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.

Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 24 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

RACETOP [100 Pack] 3 oz Bathroom Paper Cups Disposable Paper Cups Mouthwash Cups Paper Coffee Cups Ideal for Bathroom

RACETOP$6.514.2★5,598 rev

Amazon Basics Mini Disposable Clear Plastic Cups 3oz 100 Count

Amazon Basics$5.364.6★816 rev

Brandon-super [100 Count - 2 oz] Small Paper Cups Mouthwash Cups Bathroom Cups Mini Cups Small Disposable Cups

Brandon-super$6.884.7★1,881 rev

BONLONG 2 oz Lead-Free Glass Mouthwash Cup Set of 3

BONLONG$9.014.8★36 rev

MOUMOULIFE Disposable Paper Coffee Cups 3 oz 100 Count Bathroom Mouthwash Cups Leak-Proof Small Paper Cups for Bathroom & Espresso

MOUMOULIFE$5.814.6★1,764 rev

Newest

by launch date

Turbo Bee 600 Pack 3 oz Plastic Bathroom Cups Leakproof Disposable Mouthwash Cups Small PP Plastic Cups for Bathroom Rinse Dental Rinse Guest Bathroom

Turbo Bee$19.3245 rev

7mo ago

Amazon Basics Mini Disposable Clear Plastic Cups 3oz 100 Count

Amazon Basics$5.36816 rev

8mo ago

Glad for Kids Disney Princess Disposable Mini Paper Cups for Bathroom Rinsing and Parties Heavy Duty Soak Proof Paper Cups for Kids Colorful Princess Designs 3 Ounce 100 Count Kids Drinkware

Glad$5.56473 rev

9mo ago

Henry Schein Disposable Cups 5 oz Blue (200 Count) Dental Rinse Cups Double-Coated for Durability Latex-Free Embossed Grip Ideal for Medical Office and Event Use

Henry Schein$11.6679 rev

9mo ago

PACKINNO 3 oz Disposable Paper Cups Mouthwash Cups Small Coffee Cups for Bathroom Rinsing Mini Water Drinking Cups for Espresso Samples 200 Pack

PACKINNO$6.47630 rev

12mo ago

What reviews say buyers love and hate about mouthwash cup

What buyers praise and complain about, mined from review topics.

What buyers love

Quality-Overall14%

“Excellent Product”

Size-Overall12%

“Fits perfectly”

Value For Money12%

“much cheaper”

Advertised Vs Actual Product12%

“Accurate description”

Ease Of Use8%

“Its easy to handle”

Strength6%

“Simple and sturdy”

Design-Overall3%

“vivid design”

Durability3%

“They were durable for using in the bathroom”

Ease Of Cleaning3%

“easy cleanup”

Color3%

“Very nice and colors are pretty”

What buyers complain about

Size-Overall14%

“Don't fit”

Durability9%

“Fall apart”

Quality-Overall9%

“Not well made”

Leak-Proof8%

“THEY LEAK”

Ease Of Use7%

“It is hard to open”

Strength6%

“extremely flimsy”

Dispensing Mechanism6%

“did t dispense anything”

Value For Money4%

“Not worth $9”

Adhesion/Stickiness4%

“stick together really bad”

Advertised Vs Actual Product2%

“Misrepresented”

Top return reasons

Size-Overall62%

Dispensing Mechanism8%

Advertised Vs Actual Product5%

Value For Money5%

Functionality-Overall2%

Material Quality2%

Quality-Overall2%

Leak-Proof2%

Defective Material/Parts2%

Color2%

Common mouthwash cup questions

Is mouthwash cup profitable to sell on Amazon United States?: The niche generates $46K/yr across 44 tracked products. 3 of 8 products launched in the last 360 days are still selling. 90-day search growth is -12.8%. Flapen's verdict: Worth a look (51/100).
How competitive is the mouthwash cup niche?: 36 brands and 57 sellers compete. The top 5 products take 44% of clicks and top 5 brands hold 51% of demand.
What do buyers complain about in mouthwash cup?: Top complaints mined from reviews: Size-Overall, Durability, Quality-Overall. The return rate is 0.8%.
When does demand for mouthwash cup peak?: Demand is steady year-round — the busiest month runs 1.5× the quietest.
What does it cost to enter the mouthwash cup niche?: Listings span $4.87–$29.95; the average listing price is $10.79 (sweet spot $15–$100). The average incumbent carries 1,262 reviews — the moat a new listing must climb.