Best water flossers and Waterpik flossers - Which? (2024)

The best water flossers leave your teeth feeling squeaky clean, are comfortable to use and can hold a charge for weeks. We've put bestselling corded and cordless water flossers – from £35 to more than £100 – to the test to bring you our top picks.

We tested a range of popular Waterpik water flossers against other leading oral healthcare brands, including Oral-B and Philips, as well as a cheaper pick from Amazon. We discovered that most water flossers provide a decent interdental clean. However, our Best Buys in our water flosser reviews below excel above the rest when it comes to battery life, cleaning time and how easy they are to control.

We've also spoken to a dentist for expert advice on how and when to use a water flosser as part of your brushing routine.

The best water flossers

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Water flosserTypeCleaning performanceBattery lifeCleaning time from a full reservoirWhere to buy
GoodExcellentExcellent
ExcellentExcellentAverage
GoodExcellentExcellent
ExcellentAverageAverage
GoodGoodAverage
GoodExcellentAverage
AverageGoodPoor

Date tested: September 2023. We're not able to show every retailer and cheaper prices may be available.

The water flossers we tested

All the water flossers we tested are listed in alphabetical order below.

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Nicwell Smart Oral Irrigator

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TypeCordless

AttachmentsThree standard tips, one plaque tip, one tongue cleaner

Reservoir capacity200ml

Cheapest price for replacement heads£9.99 at Amazon

Need to know26.5 x 6 x 8cm (HxWxD), USB-C charger, three pressure settings

Oral-B Aquacare 6 Pro-Expert Water Flosser

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TypeCordless

AttachmentsTwo standard oxyjet tips

Reservoir capacity150ml

Cheapest price for replacement heads£9.80 at Amazon

Need to know26.5 x 5.5 x 7.5cm (HxWxD), two-pin plug charger that requires an adapter, three pressure settings

Panasonic EW1511 Water Flosser

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TypeCordless

AttachmentsTwo standard tips

Reservoir capacity200ml

Cheapest price for replacement heads£10.30 at Amazon

Need to know27.5 x 6.5 x 7.5cm (HxWxD), two-pin plug charger that requires an adapter, five pressure settings

Philips Sonicare Cordless Power Flosser 3000

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TypeCordless

AttachmentsOne standard tip, one quad stream tip

Reservoir capacity250ml

Cheapest price for replacement heads £23.49 at Amazon

Need to know29 x 6 x 6cm (HxWxD), two-pin plug charger that requires an adapter, three pressure settings, includes storage pouch for attachments

See our pick of the best electric toothbrushes, including our top cheaper choices for keeping your teeth clean

Waterpik Cordless Advanced Water Flosser WP-560UK

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TypeCordless

AttachmentsTwo classic jet tips, one orthodontic tip, one plaque seeker tip

Reservoir capacity180ml

Cheapest price for replacement heads£7 at Boots

Need to know28 x 6 x 9cm (HxWxD), two-pin plug charger that requires an adapter, three pressure settings, includes storage case for attachments

Waterpik Cordless Plus Water Flosser WP-450UK

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TypeCordless

AttachmentsOne classic jet tip, one orthodontic tip, one plaque seeker tip, one tongue cleaner

Reservoir capacity200ml

Cheapest price for replacement heads£7 at Boots

Need to know28 x 6 x 9cm (HxWxD), two pressure settings

Waterpik Ultra Professional Water Flosser WP-660UK

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TypeCorded

AttachmentsTwo classic jet tips, one plaque seeker tip, one orthodontic tip, one pik pocket tip, one toothbrush head

Reservoir capacity600ml

Cheapest price for replacement heads£7 at Boots

Need to know19 x 12.5 x 10cm (HxWxD), two-pin plug charger that requires an adapter, 10 pressure settings

Waterpik Whitening Professional Water Flosser WF-05UK

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TypeCorded

AttachmentsTwo whitening classic jet tips, one whitening plaque seeker tip, one whitening orthodontic tip, 30 whitening tablets

Reservoir capacity600ml

Cheapest price for replacement heads£8.99 at Waterpik

Need to know19 x 12.5 x 10cm (HxWxD), two-pin plug charger that requires an adapter, 10 pressure settings

How we test water flossers

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We choose bestselling water flossers available at UK retailers and enlist a panel of testers to try them out. Each person tests all of the water flossers and we buy all those that we test.

Each water flosser is rated on the following

  • CleaningOur testers rates each water flosser in turn for how effective each is at removing a teaspoon of seed mix stuck between their teeth. We also test how well each one removes food from a dental demonstration model that replicates adult teeth.
  • Battery lifeWe fully charge each water flosser and run it on its highest setting until the battery drains. We time how long it takes for the battery to drain.
  • Ease of useOur panel assess how easy it is to set each one up and move through the settings while in use. All testers also check to see how comfortable each one is to hold and use.
  • Cleaning timeWe fill up the water reservoir on each flosser and time how long it takes for the tank to drain.
  • NoiseOur panel rates how noisy each one is.

Do dentists actually recommend water flossers?

We asked Dr Praveen Sharma, a scientific advisor to the British Dental Association and specialist in restorative dentistry if dentists advise using a water flosser for teeth. He says: 'As a dentist, the preference would be for mechanical cleaning in between teeth with interdental brushes, where the anatomy allows.

'Water flossers can be an additional aid, over and above interdental cleaning, and some patients like using these.'

See our advice on how to find the best dentistincluding NHS and private options

Are water flossers better than string floss?

'Water flossers can be used in combination with interdental brushes where the gaps in between the teeth allow,' says Dr Sharma.

'Where the gaps between the teeth don't allow for brushes, other aids, such as floss, can be used.'

Eat well, live better and stay healthy.

How to use a water flosser

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Dr Sharma recommends using a water flosser alongside brushing. He says, 'It’s best done first thing in the morning, ideally before breakfast or 30 minutes after, and last thing at night before going to bed.'

As water flossers dispense a continuous jet of water, you need to keep your mouth partially closed while running the cleaning nozzle along your gum line. This allows the water to drain out but avoids it spraying everywhere.

If you struggle with this technique, which some of our testers did, you could use your cordless water flosser while in the shower if it specifies it's safe to do so. Of those we tested, the Waterpik Cordless Advanced and Nicwell Smart Oral Irrigator specify both are.

How to clean a water flosser

Mineral deposits in water can reduce the effectiveness of your water flosser over time, particularly if you live in a hard-water area.

Try to clean your water flosser regularly to stop these mineral deposits building up.

Waterpik advice says to do this by filling the water reservoir with one to two tablespoons of white vinegar mixed with warm water and running this through the water flosser.

We'd recommend that you check the manual for specific cleaning instructions for your water flosse

Best water flossers and Waterpik flossers - Which? (2024)

FAQs

Which is better Waterpik or water flosser? ›

You may have heard the term “water flosser” before, but have you hear the term Waterpik? If so, you may have wondered what the difference is between the two. The truth is there is no difference.

What kind of water flosser do dentists recommend? ›

9 out of 10 dentists recommend WATERPIK over other brands. WATERPIK is the #1 selling water flosser brand in the world.

Do waterpiks work as well as floss? ›

Is Water Flossing as Good as Dental Floss? The American Dental Association says water flossers with the ADA Seal of Acceptance can get rid of plaque. That's the film that turns into tartar and leads to cavities and gum disease. But some studies find water flossers don't remove plaque as well as traditional floss.

What are the disadvantages of using a Waterpik? ›

Cons
  • If the cost is an issue, then you may not want to get a Waterpik as a flosser as it will be more expensive initially.
  • You can't use it without electricity, thus limiting its mobility. ...
  • Plaque, even after it is removed by your dentist or in the shower, sticks to your teeth and can be difficult to remove.
Mar 3, 2023

Do I need to floss if I use a Waterpik? ›

Research has shown little difference in plaque removal between using floss versus the Waterpik. But why not do both! They each have their own benefits. For the ultimate clean and plaque removal, consider using both at least once a day.

What is the number one Waterpik? ›

The Best Overall Waterpik-Brand Water Flosser: Waterpik Aquarius Water Flosser. The Best Upgrade Waterpik: Waterpik Aquarius Professional Water Flosser. The Best Portable Water Flosser: Quip Rechargeable Water Flosser. The Best Value Waterpik: Waterpik Ultra Water Flosser.

Do water flossers remove plaque? ›

A water flosser is a device that aims a stream of water at the teeth. It's also called an oral irrigator or a dental water jet. A water flosser can help remove food particles between teeth. It also can remove plaque from teeth.

What is the difference between countertop and cordless water flossers? ›

Depending on the pressure setting in use, you can floss for 60–90 seconds with a countertop model, compared to 30–45 seconds for a cordless model. This means that you may need to refill a cordless model in order to complete water flossing.

Should you use a Waterpik before or after brushing? ›

We recommend using the water flosser prior to toothbrushing: Removing food and debris enhances the effectiveness of both toothbrushing and toothpaste. Instructing patients to use it first improves compliance.

Can you use a Waterpik too much? ›

While water flossers are generally considered safe for most people, there is some evidence to suggest that overuse or incorrect use can lead to gum damage. On the other hand, water flossers have been shown to improve gum health by removing plaque and reducing the risk of gum disease.

Can I use water flosser everyday? ›

Recommended Frequency and Duration of Use: It's generally safe to use a water flosser once or twice a day for two minutes at a time. Correct Technique for Water Flossing: Hold the water flosser tip at a 45-degree angle to the teeth and gums and aim the stream of water directly at the gum line.

What is a good inexpensive water flosser? ›

You can get a quality water flosser like the Aquasonic Aqua Flosser—our best overall pick—for less than $50. If your budget allows and you're looking to streamline your oral healthcare routine, opt for an all-in-one electric toothbrush and flosser, like the Waterpik Sonic Fusion 2.0.

Can water flosser remove tartar? ›

Water flossing can be an effective tool for maintaining good oral hygiene and preventing the buildup of tartar. However, a water flosser may not remove existing tartar once it has formed. Using a water flosser can aid in tartar prevention, but it's not a substitute for professional dental cleanings.

Why do dentists recommend Waterpik? ›

The ADA Council on Scientific Affairs Acceptance of Waterpik Water Flosser is based on its finding that the product is safe and has shown efficacy for removing plaque along the gumline and between teeth and helping to prevent or reduce gingivitis, when used as directed.

How often should you use a Waterpik? ›

You should use your WATERPIK water flosser at least once per day. Why? To maintain good oral health, the American Dental Association recommends that you floss at least once per day and brush your teeth at least twice per day.

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