Slickdeals is community-supported. We may get paid by brands for deals, including promoted items.

frontpage Posted by Izzy138 | Staff • 3d ago

Item 1 of 9

frontpage Posted by Izzy138 | Staff • 3d ago

COSLUS 300ml Cordless Portable Rechargeable Water Flosser

+ Free Shipping

$10

$44

77% off

Amazon

53 Comments 27,049 Views

Get Deal at Amazon

Good Deal

Bad Deal

Save

Bichenis via Amazon has COSLUS 300ml Cordless Portable Rechargeable Water Flosser on sale for $43.59 - $33.60 with promo code J7BN7JM2 at checkout = $9.99. Shipping is free.

Thanks to Staff Member Izzy138 for sharing this deal.

About this Item:

This water dental pick delivers high water pressure pulses at 1400-1800 times per minute, effectively removing 3c more plaque for deep cleaning. This water flosser also features multiple operation modes and multiple pressure settings to suit different oral conditions and users
This water flosser features an upgraded 300ml water tank, twice the capacity of other old models, eliminating the need for frequent refills and making your oral cleaning more convenient and efficient
Its ergonomic handle and 5 interchangeable multiple tips ensure a comfortable and versatile experience

Editor's Notes

Written by SaltyOne | Staff

Rated 4.4 out of 5 stars from customer reviews.
Don't have Amazon Prime? Students can get a free 6-Month Amazon Prime trial with free 2-day shipping, unlimited video streaming & more.
If you're not a student, there's also a free 1-Month Amazon Prime trial available.

Original Post

Written by Izzy138 | Staff

This water dental pick delivers high water pressure pulses at 1400-1800 times per minute, effectively removing 3c more plaque for deep cleaning. This water flosser also features multiple operation modes and multiple pressure settings to suit different oral conditions and users
This water flosser features an upgraded 300ml water tank, twice the capacity of other old models, eliminating the need for frequent refills and making your oral cleaning more convenient and efficient
Its ergonomic handle and 5 interchangeable multiple tips ensure a comfortable and versatile experience

Editor's Notes

Written by SaltyOne | Staff

Rated 4.4 out of 5 stars from customer reviews.
Don't have Amazon Prime? Students can get a free 6-Month Amazon Prime trial with free 2-day shipping, unlimited video streaming & more.
If you're not a student, there's also a free 1-Month Amazon Prime trial available.

Original Post

Written by Izzy138 | Staff

Deal Score

+49

Get Deal at Amazon

Price Intelligence

Model: COSLUS Water Dental Flosser Teeth Pick: Portable Cordless Oral Irrigator 300ML Rechargeable Travel Irrigation Cleaner IPX7 Waterproof Electric Waterflosser Flossing Machine for Teeth Cleaning F5020E

Deal History

Sale Price

Slickdeal

$NaN

Today

Post Date	Sold By	Sale Price	Activity
04/28/25	Amazon	$9.99	34
01/22/25	Amazon	$13	6
12/11/24	Amazon	$7.25 frontpage	35
08/27/24	Amazon	$9.83	0
08/06/24	Amazon	$15	1
08/04/24	Amazon	$20	3
06/07/24	Amazon	$18	14

Current Prices

Sort: Lowest to Highest | Last Updated 7/18/2025, 11:32 PM

Sold By	Sale Price
Amazon	$42.99

Unregistered (You)

Top Comments

jeff11214

672 Posts

28 Reputation

Maybe yours is defective... We have two of these in our house. Using it since January with no issues. Battery life is great. Highly recommend for $10!

52 Comments

monkeybiz

3d ago

36,279 Posts

Joined Jul 2006

3d ago

monkeybiz

3d ago

36,279 Posts

yes.. worth a shot at this price but I never opened mine.. I went with a different brand with removable tank for refilling. Good health investment in oral health. and mouth feels fresh. I almost forget to brush when I put a little mouthwash in the tank.

SmilingCircle1122

3d ago

29 Posts

Joined Apr 2025

3d ago

SmilingCircle1122

3d ago

29 Posts

I bought 1 of these at $20 2 weeks ago, pretty good tbh. Ordered 2 ones going back, thank you

Lanman

3d ago

286 Posts

Joined Nov 2011

3d ago

Lanman

3d ago

286 Posts

Our community has rated this post as helpful. If you agree, why not thank Lanman

Hey folks - You apparently need to choose Bikenis or whatever the name of the Seller is to use the code.

echan

3d ago

32 Posts

Joined Oct 2003

3d ago

echan

3d ago

32 Posts

Decent flosser. My battery died after 14 months and they sent a free replacement because it's covered by a 24 month warranty

BigD4thedeals

3d ago

1 Posts

Joined Jun 2021

3d ago

BigD4thedeals

3d ago

1 Posts

Didn't work for me. Tried green and black

DonV1962

3d ago

6,902 Posts

Joined May 2007

3d ago

DonV1962

3d ago

6,902 Posts

Quote from hopeforgood

This product is trash. Power button ( ON/OFF) switch is on wrong position. Dispenser head keeps rotating. Battery life sucks. Overall 1 out of 100 rating.

My wife has been using this one for about six months now and has no problems. It is as strong as the Btivae one I have and holds a charge for long time. They are both much better than the Waterpik branded(China) travel loser I had previously. In fact I gave up on my plug in countertop water flosser.

Maybe you got lemon or something but one bad product out of a production run does not make all products trash or junk. I once paid $28,000 for a Isuzu and it was a complete lemon. That did not mean that the model was bad in general or that Isuzu made all bad products. In fact the model I got was rated well for dependability I just happened to get a bad one. I can state I got a bad one but plenty of other people had perfectly wonderful vehicles and my one experience was not a universal. All production runs and factory lines have failure rates

DonV1962

3d ago

6,902 Posts

Joined May 2007

3d ago

DonV1962

3d ago

6,902 Posts

Code allows multiples for me. I purchased three on one order at $9.99 each

UniqueCarpenter8266

3d ago

39 Posts

Joined Oct 2018

3d ago

UniqueCarpenter8266

3d ago

39 Posts

Works just fine. Like other commenters have stated, you need to select the proper seller for the discount. Side note, you don't actually need prime for free shipping on this. That just gives you shipping a few days earlier. Standard shipping is still free, even without the normal $25 amazon breakpoint.

nova_and_onyx

2d ago

1,367 Posts

Joined May 2012

2d ago

nova_and_onyx

2d ago

1,367 Posts

Grabbed this. Hoping it's quality!

dealballs1989

2d ago

208 Posts

Joined Apr 2013

2d ago

dealballs1989

2d ago

208 Posts

Can you actually use this in place of flossing? Would love if that were the case, as even string flossers are uncomfortable to fit between my teeth.

lmclaurin777

2d ago

359 Posts

Joined Jun 2018

2d ago

lmclaurin777

2d ago

359 Posts

Quote from dealballs1989

Can you actually use this in place of flossing? Would love if that were the case, as even string flossers are uncomfortable to fit between my teeth.

No. you cannot

cmurduh

2d ago

23 Posts

Joined Sep 2015

2d ago

cmurduh

2d ago

23 Posts

In for two. Thanks

testor102

2d ago

273 Posts

Joined Oct 2009

2d ago

testor102

2d ago

273 Posts

im gonna use this to clean my braun shaver head before putting it in the cleaner to stretch the cleaning fluid.

constructordemarcas

2d ago

54 Posts

Joined Sep 2017

2d ago

constructordemarcas

2d ago

54 Posts

So I got both, this one and the previous one. Which one is better to keep and give away the other one?
https://slickdeals.net/f/18433444-onlyone-water-dental-flosser-300ml-portable-rechargeable-oral-irrigator-for-teeth-4-modes-and-5-jet-tips-9-99-ac?src=SDSearchv3&attrsrc=Thread%3AExpired%3ATrue%7CSearch%3AType%3Anormal%7CSearch%3ASort%3Arelevance%7CSearch%3AHideExpired%3Afalse

lilila

2d ago

45 Posts

Joined Feb 2010

2d ago

lilila

2d ago

45 Posts

Works for me.

Unregistered (You)

Health & Beauty Toothpaste, Toothbrushes & Oral Care Coupon Free Shipping with Prime Online Only Amazon

COSLUS 300ml Cordless Portable Rechargeable Water Flosser

$10

$44

Editor's Notes

Original Post

Editor's Notes

Original Post

Community Voting

Price Intelligence

Deal History

Current Prices

Leave a Comment

Top Comments

52 Comments

Leave a Comment

Related Searches

Popular Deals

Trending Deals

COSLUS 300ml Cordless Portable Rechargeable Water Flosser

$10

$44

Editor's Notes

Original Post

Editor's Notes

Original Post

Price Intelligence

Deal History Deal History includes data from multiple reputable stores, such as Best Buy, Target, and Walmart. The lowest price among stores for a given day is selected as the "Sale Price". Sale Price does not include sale prices at Amazon unless a deal was posted by a community member.

Current Prices

Leave a Comment

Top Comments

52 Comments

Leave a Comment

Related Searches

Deal History