It's not that one is more effective than the other.
If you are using fresh-squeezed organic lemon or lime juice OR a 10% citric acid solution, you must activate the mms by using FIVE drops of the lemon/lime/10% to each ONE drop of the mms.
If you are using a 50% citric acid solution, you use only ONE drop of that per each ONE drop of mms.
All the best!