Waterpik WP-250 Mode D'emploi page 11

Recommended Technique
Direct the stream at a 90-degree angle to your gumline. Slightly close
lips to avoid splashing but allow water to flow freely from mouth into the
sink. For best results, start in the molar area (back teeth) working toward
the front teeth. Glide tip along gumline and pause briefly between teeth.
Continue process until you have cleaned the inside and outside of both
the upper and lower teeth.
When Finished
Turn the unit off. Empty any liquid left in the reservoir. Unplug the unit.
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