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The Coslus Water Flosser is a corded countertop oral irrigator with a 600 ml reservoir, one of the largest tanks in its class. That means fewer refills during a session than most rival flossers, which typically hold 200 to 300 ml. It runs on mains power, so there is no battery to charge or wear out, but it must sit near an outlet and is not a travel device. It suits people with braces, implants, bridges or gum pockets who want a full-mouth clean in one fill.
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Lowest price we've seen: $36.93 on Nov 11 at Walmart. Tracked across 2 stores since Nov 11.
Owners of large-tank corded flossers like this generally value the long run time between refills and steady pressure. Common complaints centre on counter footprint and the lack of portability.
