Top 5 compared
The best water flossers
Gaps between teeth and around braces cleaned with a jet of water instead of finicky string floss.
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The top 5 at a glance
A water flosser pulses a thin jet of water through a small tip, along the gumline and into the gaps between teeth, in a minute or two. Cordless ones are handheld, with a small tank built in and a rechargeable battery. Countertop ones plug into a wall outlet and stay by the sink, with a bigger tank in the base.
The cordless ones here are rated IPX7 waterproof and charge over a USB cable, with no plug in the box, so they pack easily for a trip. A countertop flosser needs an outlet near the sink, and in return has a bigger tank and more tips to share out. Every one comes with several tips, so more than one person can use it.
What matters
- Pressure settings that start very low, for sensitive gums.
- Spare or specialist tips, for braces or a whole family.
#1Waterpik Aquarius Water Flosser (WP-660)
$100–$150
A countertop flosser with ten pressure settings plus a massage mode, a 650 mL (22 oz) tank for more than 90 seconds of flossing, and seven tips for a whole family, including orthodontic, gum-pocket and plaque tips. Waterpik made the first water flosser in 1962.
What owners say: Teeth have never felt cleaner, say many owners, who find it far easier than string floss, with a tip for every need in the box. It’s louder than some expect, though, and not everyone likes its size.
Heads up: It plugs into a wall outlet and lives on the counter by the sink, so it won’t travel like the cordless four.
A closer look: Start on setting 1 and step up a level at a time as the gums get used to it, leaning over the sink with lips nearly closed so the water drains away. The tank lifts off for the top rack of the dishwasher, and the timer’s pauses at 30 seconds and a minute say when to move on.
- Orthodontic, gum-pocket and plaque tips
- Tips rotate 360°
- On/off switch on the handle
- 3-year limited warranty
Best for: The whole family
- Water tank
- 650 mL (22 oz), 90+ seconds
- Settings
- 10 pressures + massage
- Tips in the box
- 7
- Charging
- Corded (wall outlet)
- Good to know
- Timer and pacer; dishwasher-safe tank
#2COSLUS Cordless Water Flosser (C20)
$30–$50
COSLUS’s everyday cordless model: a 300 mL tank, three settings from soft to deep clean, five tips and a 1400 mAh battery that lasts up to 30 days on a 3-hour charge, so a week away needs no cable. COSLUS rates its metal motor for about three years of use.
What owners say: Owners say it leaves their teeth feeling really clean, is simple to use and holds its charge for ages, and most think it good value. The water pressure divides them, and some worry about how long it will last.
A closer look: Fill the tank with lukewarm water for a gentler first go, and empty it after each use so it dries out between cleans. Being IPX7, it’s fine to use in the shower once the charging port cover is shut tight.
- Metal motor rated 3 years
- 1,400–1,800 pulses a minute
- 2-year warranty
Best for: People new to water flossing
- Water tank
- 300 mL (10 oz)
- Settings
- 3 modes, soft to deep clean
- Tips in the box
- 5
- Charging
- 1,400 mAh; USB cable, 3-hour charge, up to 30 days, no plug
- Good to know
- Shower-safe (IPX7)
#3WAFLOO Cordless Water Flosser, 4 Modes (Y801)
$30–$50
A full-size cordless flosser: four set modes from soft to strong, and it remembers the last one used, so it’s ready on your setting each morning. The wide-mouth 300 mL (10 oz) tank lifts off to rinse, the nozzle turns all the way around for the back teeth, and a brush head and a tongue cleaner come with the two jet tips.
What owners say: Owners find it simple to put together and run, and it cleans well at a pressure that suits them; a charge lasts long enough that it doesn’t need the cable after every use.
A closer look: The maker suggests starting on the soft mode and working up as the gums get used to it. Keep the lips nearly closed and the tip in the mouth until it’s switched off, which stops most of the splashing, and close the charging port’s silicone cover before using it in the shower.
- Wide-mouth tank lifts off
- Silicone cover on charging port
Best for: The same setting every morning
- Water tank
- 300 mL (10 oz)
- Settings
- 4 modes, soft to strong
- Tips in the box
- 4 (2 jet, brush, tongue)
- Charging
- USB cable, no plug; days per charge not given
- Good to know
- Remembers last mode; 360° nozzle; IPX7
#4COSLUS C51 Compact Cordless Water Flosser (pink)
$30–$50
A slimmer COSLUS for a toiletry bag, which the maker says weighs 30% less than traditional flossers, with two tips stored inside the body so they stay clean on the road. Three modes and six pressure levels give 18 combinations, and the jet mode sprays only while the button is pressed, which keeps splashes down.
What owners say: Powerful for its size, owners find, painless to set up and rinse out, and reasonably priced; the battery runs a long time and the shape suits travel. Leaking is the single point of disagreement.
A closer look: The wide, borderless opening makes the tank quick to fill at a hotel sink and easy to rinse out afterward. Charge it before a trip and pack the cable that came with it, which may be USB or USB-C during COSLUS’s changeover, as there’s no plug in the box.
- Jet sprays only while pressed
- Wide opening, quick to fill
- 2-year warranty
Best for: Travel and small bathrooms
- Water tank
- 300 mL (10 oz)
- Settings
- 3 modes × 6 levels
- Tips in the box
- 4
- Charging
- USB or USB-C cable, 3-hour charge, about 30 days, no plug; mAh not given
- Good to know
- Stores 2 tips inside; IPX7
#5Bezvoi Cordless Water Flosser with LED Display (Y215)
$30–$50
Five modes, from a gentle point mode to a strong one, shown on an LED display, with six tips in the box and a 2000 mAh battery Bezvoi rates for up to 40 days on low. The wide-mouth 300 mL tank is easy to wipe out, and a weighted intake keeps it drawing water without tilting.
What owners say: Teeth and gums feel very clean after it and it gets well between them, owners say, and they like the long battery life and the spread of tips. The settings and pressure suit most, though some units don’t hold up as well as others.
A closer look: Bezvoi suggests first-timers start in point mode and move up as the gums settle in. Empty and dry the tank after each use and keep it somewhere dry, which the maker says helps the motor last; it charges over USB-C, but bring your own plug.
- Gentle mode for first-timers
- Draws water without tilting
- Metal motor rated 3.5 years
- 360° nozzle
- 2-year warranty
Best for: Long battery and plenty of tips
- Water tank
- 300 mL (10 oz)
- Settings
- 5 modes
- Tips in the box
- 6
- Charging
- 2,000 mAh; USB-C, up to 40 days (low), no plug
- Good to know
- LED display; IPX7
How they compare
Swipe sideways or rotate device to see all 5.
| Feature | #1Waterpik Aquarius | #2COSLUS C20 | #3WAFLOO Y801 | #4COSLUS C51 | #5Bezvoi Y215 |
|---|---|---|---|---|---|
| Best overall | Best budget | ||||
| Picked Rating | 8.8 | 8.7 | 8.7 | 8.6 | 8.6 |
| Price | $100–$150 | $30–$50 | $30–$50 | $30–$50 | $30–$50 |
| Water tank | 650 mL (22 oz), 90+ seconds | 300 mL (10 oz) | 300 mL (10 oz) | 300 mL (10 oz) | 300 mL (10 oz) |
| Settings | 10 pressures + massage | 3 modes, soft to deep clean | 4 modes, soft to strong | 3 modes × 6 levels | 5 modes |
| Tips in the box | 7 | 5 | 4 (2 jet, brush, tongue) | 4 | 6 |
| Charging | Corded (wall outlet) | 1,400 mAh; USB cable, 3-hour charge, up to 30 days, no plug | USB cable, no plug; days per charge not given | USB or USB-C cable, 3-hour charge, about 30 days, no plug; mAh not given | 2,000 mAh; USB-C, up to 40 days (low), no plug |
| Good to know | Timer and pacer; dishwasher-safe tank | Shower-safe (IPX7) | Remembers last mode; 360° nozzle; IPX7 | Stores 2 tips inside; IPX7 | LED display; IPX7 |
| Best for | The whole family | People new to water flossing | The same setting every morning | Travel and small bathrooms | Long battery and plenty of tips |
| Buy now | Amazon | Amazon | Amazon | Amazon | Amazon |
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