Monthly Showers

How often do you shower your houseplants? As part of my indoor gardening, I have several beneficial houseplants throughout the house.
I set aside one day a month to give those houseplants (not the African Violets!) a good shower! Pop two or three in the tub and use the shower extention to spray them with tepid temperature water. Free of dust, the soil gets a good saturation.
A kitchen sink with a spray extention also works well.