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This compact, dentist-backed Waterpik flosser is at its lowest price of the year

'Teeth have never felt cleaner': Blast away plaque with this top-rated cordless tool while it's a rare 40% off.

While you most likely go to the dentist for routine cleanings twice a year, keeping up with your oral hygiene day in and day out is also critical to a healthy smile. Brushing and flossing probably aren't your favorite part of the day, but they're important. So if you've been looking to step up your teeth-cleaning routine, today's your lucky day — Waterpik's Cordless Advanced Water Flosser is 40% off at Amazon for Prime shoppers, thanks to Amazon's October Prime Day event. The battery-powered tool expertly flosses your teeth with water, no yucky string required.

With three pressure modes to choose from, everyone can get a great clean with this Waterpik — and Prime shoppers will save even more.

Save $40 with Prime | Lowest price of the year
$60 at Amazon

Why is this a good deal? 💰

Typically retailing for $100, this top-rated flosser can be yours for $60 with Prime — that's the lowest we've seen it since Black Friday 2023, and we have a feeling this steep markdown won't last long! Choose from white, black, gray and blue, all on sale now, and all way cheaper than unexpected trips to the dentist to deal with cavities, gum disease or other oral-health hiccups.

Why do I need this? 🤔

If you've never considered a water flosser, you're missing out. Not only is this one easy to use (simply fill the reservoir with warm water and you're ready to go), but it "removes up to 99.9% of plaque and is up to 50% more effective than dental floss for improving gum health." It's also worth noting that 9 in 10 dental professionals are Waterpik fans. C'mon, if that doesn't make this a no-brainer, what will?

Dentists' approval aside, Waterpik's quiet, pain-free design features a ton of thoughtful details that make it stand out from the crowd. It comes with four tips (that rotate 360°), a shower bag and a tip case. Additionally, it has three pressure settings, and you can wash the reservoir in the top rack of your dishwasher; the reservoir holds 7 ounces of water, which provides about 45 seconds of flossing time. This flosser is also easily rechargeable — the charger connects magnetically and fully juices up the flosser in just four hours.

This Waterpik Cordless Advanced Water Flosser is incredibly travel-friendly too. From the compact, cordless design to the convenient travel case, you won't have to sacrifice your oral hygiene routine because you're on the go.

3 cordless waterpiks in navy blue, white and black
Open wide and say, "Wow!" A 40% markdown on this dentist-recommended flosser is enough to make anyone do a spit take. (Amazon)

What reviewers say 💬

Amazon shoppers seriously can't get enough of this thing — 42,000-plus reviewers have given it a five-star rating.

Pros 👍

One pleased customer said this flosser "cleans teeth as well as a dental hygienist!" They went on to share: "I've always been careful about flossing, but my gums still got inflamed occasionally from food the floss didn't reach. That has not happened once since I started using the Waterpik. Worth every dime!"

"I purchased a less expensive version three-plus years ago," began this fresh-mouthed fan. "It functioned adequately, but was loud and shrill, with very limited functionality. The 'Advanced' version is much quieter, with a deeper more comfortably pitched sound. It also comes with a magnetic charger, and lights that tell you when the charge is needed, and when it is complete (a huge improvement)."

Chimed in a third: "I always thought I brushed and flossed thoroughly until I saw what I had missed! My teeth have never felt cleaner!"

Cons 👎

One shopper's only gripe was that the fun's over too soon! "The manual informs you that the reservoir holds 45 seconds worth of water. That doesn't seem like much. ... The tradeoff, however, is very positive. This Pik is every bit as powerful as it should be, holds a charge wonderfully, takes up minimal space and, above all, we can toss it in a bag and take a trip."

This user agreed: "Been using it every day since I got it and I've absolutely loved it, the only complaint I have is that the tank might just be a bit too small as I end up having to refill it when using it."

This little gizmo is waterproof, so you can even floss in the shower — no more dribbly sessions over your sink.

Save $40 with Prime | Lowest price of the year
$60 at Amazon

If you have Amazon Prime, you'll get free shipping, of course. Not yet a member? No problem. You can sign up for your free 30-day trial here. (And by the way, those without Prime still get free shipping on orders of $35 or more.)

The reviews quoted above reflect the most recent versions at the time of publication.

Your October Prime Day Shopping Guide: See all of our Prime Day coverage. Shop the best Prime Day deals on Yahoo Life. Follow Engadget for Prime Day tech deals. And find Prime Day sales to shop on AOL, handpicked just for you.