1. Mix baking soda and vinegar in bag over a sink. Caution: Pour vinegar into bag slowly, there is an “explosive” foaming action that kicks in.
2. Place bag over showerhead. Be sure it is submerged in the baking soda/vinegar solution.
3. Secure with twisty tie.
4. Let the showerhead soak in the solution overnight or for at least 2-3 hours.
5. Wipe off showerhead prior to use.