Water flosser vs string floss is one of the most common questions people ask once they decide to get serious about cleaning between their teeth. Both tools reach the spaces a toothbrush misses, and both can support healthier gums. But they work differently, cost differently and suit different people.

String floss is the classic option. It physically scrapes plaque from the sides of each tooth and cleans tight contact points well, but it takes good technique and steady hands, and it's the step many people quietly skip.

Water flossers use a pulsing stream of water to flush out food and loosen plaque along the gumline. They're often easier and more comfortable, especially for people with braces, implants, bridges or limited dexterity, but they need charging, refilling and counter or bag space.

This guide explains what each method does well, where marketing claims outpace the evidence, and how to choose based on your teeth, your gums and your routine. We also pick the water flossers, woven flosses, flat floss and floss picks from our catalog that fit specific needs.

By the end, you'll know which option you're most likely to use every day, which is the thing that matters most. If you have gum disease, dental implants or orthodontic work, it's worth asking your dentist or hygienist which method they'd prefer for you.