Clean Showerheads... -1/3 cup baking soda -1 cup white vinegar -1 plastic bag -1 large bag twisty tie 1) Mix soda and vinegar in bag over sink. Caution: pour vinegar slowly as there is an "explosive" foaming action that kicks in. 2) Place bag over shower head and secure with twisty tie. Let soak overnight or at least 2-3 hours. Wipe shower head off prior to use.