For this protocol, I just use the store-bought 3% and
put 3 or 4 drops in each ear. If there is lots of
bacteria and toxins, it will sound like you have a bowl
of rice crispies in each ear for a few minutes. If
you don't hear it, that probably means your ears are
pretty clean.

This is an excellent thing to do on those days when you feel
like you are about to come down with something.