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Title: fatal flaw
Review: i finally bought a new waterpic after many years of using an old model. the old one always suffered from not enough water capacity. always had to mix a separate container with water/and hydrogen peroxide and mouthwash. before i could finish a good job of cleaning i would always run out of liquid and have to refill container. well the new ultra flosser i bought is much worse about running out of liquid before i finish flossing. it also has less pressure than old one. i would have kept the old one if i had known.
