✔️ Cordless vs. countertop: If you’re looking for versatility and portability, opt for a handheld, cordless water flosser. Most cordless flossers can be used in the shower, minimizing mess. If you have the counter space, consider a corded countertop model as they have greater water capacity and more pressure settings. They’re also easier on the hands — since most of their weight rests on the counter, all you have to lift is a lightweight wand.

✔️ Pressure settings: Some water flossers only have a couple of pressure settings, while others as many as 10 options. Some settings offer deep cleaning for extra work on the gums, while sensitive options offer a thorough clean but with a gentler intensity.

✔️ Tips: Though classic tips work just fine, some tips serve a more specialized purpose: “The ortho [tip] is what I find helpful for younger patients, especially,” says Sharon Huang, DDS. “A 10-year-old is not going to floss, so this is something that’s going to help them.” For someone who doesn’t have the dexterity or has braces, the ortho tip makes cleaning easier, she says.

✔️ Water tank capacity: If you opt for a handheld version, keep in mind you’ll have to sacrifice some reservoir space. Meanwhile, countertop flossers can run the gamut of 10 to 20 fluid ounces, which means you can usually clean your entire mouth in just one fill.