Unplug the Waterpik
Remove the water reservoir
Empty any remaining water
Wash the reservoir with warm water and mild dish soap
Rinse the reservoir thoroughly
Wipe the base with a damp cloth
Clean the handle and tip with warm water
Remove the tip and rinse it separately
Soak the tip in white vinegar if needed
Run a mixture of equal parts white vinegar and water through the unit
Let the vinegar solution sit in the reservoir for a few minutes
Run plain water through the unit to rinse it out
Clean the nozzle opening with a soft brush or cloth
Dry all parts completely before reassembling
Clean the Waterpik regularly to prevent buildup