This is a powerful,effective device,I brush,use dental sticks and floss in the usual way,then finish with the water jet.I have the pump set at its highest pressure - not suitable for everyone - begin with a low setting until you find a pressure which suits you.
when the reservoir is filled and placed on the base,gently press down to make sure it is fully located - this will ensure maximum pressure.Direct the water jet toward the gumline - oral organisms are obliterared en masse.
will freshen your breath,keep gum inflammation at bay and save you pain and money at the dentists.