Yup - sure do!
Two options to access MMS (master mineral solution.)
1. Buy it from a reputable health shop that provides it for treatment of water.
2. Make your own. ( least recommended option.)
Buying MMS involves finding a source that stocks 28% solution Sodium Chlorite prepared in distilled water. So normally you would get a 4 oz bottle that is opaque and suitably labeled. Normally it is supplied with an activator - normally a 10% solution of citric acid. If not, you can use a 5% solution of vinegar or just plain lemon juice. Keep MMS stored out of direct sunlight.
To make a treatment batch - one mixes one drop of 28% solution Sodium Chlorite (MMS) with 5 drops of activator in a clean dry glass. The mixture must then be left for 3 minutes or longer to fully activate. This will treat one gallon of water (which should be filtered first before adding MMS.) Once the batch is mixed the water must stand for one hour, and preferably filtered again before use.
To make your own MMS - check it out via Google, as there are many references offered on the net.
Anybody needing more advice, jest ask.