Onlyone Water Flosser Under $20 Beats Waterpik, Reviewers Say
Onlyone Water Flosser Under $20 Beats Waterpik

If you have been putting off adding a water flosser to your daily routine, now might be the perfect time to reconsider. While the Waterpik has long been considered the gold standard in water flossing, many reviewers are now praising a more affordable alternative that they claim works even better. The Onlyone rechargeable water flosser is travel-ready, features multiple settings, and delivers powerful cleaning that reviewers say beats the Waterpik by a significant margin. Best of all, it is currently available for just $19.99 on Amazon, down from its regular price of $24.98.

Why Reviewers Love the Onlyone Water Flosser

Users describe the experience as feeling like a mini dentist visit every day. The flosser features a swivel head and an easy-to-remove water tank, eliminating the need to awkwardly maneuver traditional floss or deal with disposable flossers that often break mid-use. With four pressure settings and five interchangeable tips, users can customize their oral care routine to include tongue scraping, gentle cleaning for sensitive gums, or deep cleaning for braces and bridges. Many reviewers note that their dentist recommended a water flosser, and they were initially skeptical. However, after trying the Onlyone, they report that their teeth and mouth feel incredibly clean, and they have been able to maintain a consistent flossing habit.

One satisfied user commented: "Since the day it arrived, I haven't missed a single use. The pressure is perfect, the design is easy to handle, and for the price, it's an absolute steal. I honestly don't know why I waited so long to try one!"

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Convenient Design and Long Battery Life

The 300-milliliter water tank is removable for easy refilling and cleaning, and reviewers describe it as surprisingly generous, allowing for a full flossing session without needing to refill. The device charges in just three hours and provides up to 30 days of use on a single charge. Its waterproof body means it can be used in the shower without worry, and the cordless, compact design makes it ideal for travel. One user noted: "Perfect to just toss into a bag or suitcase. So wonderfully convenient for home and when traveling."

Powerful Performance That Outshines the Competition

The Onlyone flosser delivers 1,500 to 2,000 pulses per minute with up to 150 PSI of pressure, making it three times more effective than traditional flossing at removing plaque, debris, and stains. Many reviewers compare it directly to the Waterpik and find it superior. One reviewer wrote: "This beats Waterpik in price and even performance." Others highlight its faster charger, longer battery life, easier setup, and simpler maintenance. A shopper shared: "It's more powerful and I love that you can remove the water reservoir to clean. And the price? Can't beat it."

Additional 5-Star Reviews

Here is what more users have to say about the Onlyone water flosser:

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  • Dilutz8: "I have only used this water pick once and love it. I purchased it to replace the Waterpik Cordless Advanced 2.0 Water Flosser I purchased a few months ago (which stopped working because I tried to clean a part of it that wasn't meant to be cleaned). The Onlyone was a fraction of the cost and already I can see it is a better buy. I like the way it works and the water reservoir is larger and much easier to remove."
  • Angad: "Consumer reports gave this product a great review and I have to say very impressed it lasts for 15 days on 1 single charge has a large enough water bay for 1 minute of use which is more then enough. This beats waterpik in price and even performance. I use high speed mode only and it has made my teeth better and when food stuck in my teeth dont have to use annoying picks this is a gamechanger. I use this every night before going to bed."
  • Dale D.: "Purchased this to replace an older Waterpik that was cordless as well. This one is fantastic. Less expensive and has more control and more adapters. I started on the Slowest mode and it seems compatible with my previous Waterpik. Amount of water and battery storage is fantastic. Would recommend."
  • Aldo: "I already own a WaterPik counter model which is fine but I don't use it because setup and maintenance after use is a pain. First world problems, right? But if your flosser is not accessible and easy, you're not going to use it. What's the point then? I've been using my Onlyone water flosser daily (or more!) since I received it 3 weeks ago. The Onlyone feels solid and durable, buttons and controls click with quality, water-filling and after use cleaning is so simple. The flosser hasn't needed a charge in three weeks and has more than enough water pressure to clean my teeth and refresh my gums. The Onlyone comes with four or five tips, including a tongue cleaner, has four water pressure settings, including pulse, and comes apart quickly for easy maintenance. My previous CVS portable water floss didn't work even half as well as the Onlyone and felt...well...like it wasn't going to last. It didn't. I'm very happy with the choice I made and the performance has been outstanding. My dentists (yes, plural) are very happy with my homecare now and my water flosser is a pleasure to use. I recommend!"
  • Jan: "I was a waterpik user in the past; I spent enough on it, but it really was something my tight teeth needed. But the thing was a pain-filling, the curly water tube to the handle never was comfortable to use. When this tube sprung a leak, I quit. But I missed clean molars. After fighting things caught behind my crown...I thought I'd give this inexpensive mobile unit a try....Messy to use at first-BUT after learning curve & not having to stand in the shower...I have to say I fell in love. Thick feeling grip-but hey! It is portable! Charges fast! I found my favorite head-the plaque one-OMG!!! It is the best!!!! My crown has never felt better or cleaner! Crap still gets stuck, but I a second this baby knocks thing clean! Only issue is that it needs to be refilled once when using. I brush well, gargle salt water, floss carefully & STILL get stuck parts out of my crown!!! My mouth has never felt this good. I love this little gem. And the price is so reasonable...I can buy 3 of these for the cost of a overpriced waterpik."
  • Amber Waves: "Beats major brand by a landslide!. I bought two water flossers, WaterPik $70 for home and OnlyOne $24 for travel. After four weeks of use OnlyOne outshines WaterPik. Water reservoir: OnlyOne has 10oz capacity. WaterPik has 4oz and required multiple fills each use. Options|Speed: OnlyOne has a variety of options including pulse. WaterPik has one, On|Off. In my opinion, OnlyOne's water stream is stronger. I've switched to OnlyOne for every day care. WaterPik is napping in my travel bag."

The Onlyone water flosser is available now for $19.99 on Amazon, regularly $24.98. This deal is backed by our commitment to finding genuine discounts on highly-rated products, ensuring you get real value.