This water flosser has a built-in rechargeable battery for $22 shipped (40% off)

$22

GooBang Doo US (99% positive lifetime feedback) via Amazon offers its Rechargeable Portable Water Flosser for $22.19 shipped when you use code P8G3FHON at checkout. Regularly over $35, this is a new all-time low that we’ve tracked and is the best available. Water flossers make a once time-consuming and tedious chore simple and fun. Plus, think of what your dentist will say when you walk into your next checkup and they don’t have to remind you to floss that time. Rated 4.5/5 stars.

Prefer the old fashioned way? You can pick up a 6-pack of Glide Oral-B Pro-Health Deep Clean Floss for $13 shipped when you clip the on-page coupon and be good to go for several months.

Rechargeable Portable water Flosser features:

• The upgraded removable full-opening water tank allows you to thoroughly clean the limescale and bacteria inside, which is impossible for common oral irrigators.
• IPX7 waterproof design is adopted in both internal and external to provide dual protection. The intelligent design prevents leakage and allows the dental flosser to be used safely for shower in the bathroom.
• Normal, soft and pulse mode are selectable for different oral care needs. Our cordless dental water flosser has memory function, you can set your favorite mode before power on. Two minutes auto-timer avoids it still working after you finish cleaning.
• The ABOX rechargeable oral irrigator with powerful lithium battery is able to be used continuously for 7-10 days once fully charged