Dirty Showerheads: -1/3 cup baking soda -1 cup white vinegar -1 plastic bag -1 large bag twisty tie Mix baking soda and vinegar in bag over a sink. Place bag over showerhead. Be sure it is submerged in the baking soda/vinegar solution. Secure with twisty tie. Let the showerhead soak in the solution overnight or for at least 2-3 hours. Wipe off showerhead prior to use. Enjoy your free flowing showerhead! Pretty easy and cheap, huh?