About the Mexican, concentrated CS, this is available all over Mexico, usually as 'Biopur,' at $1.25 per 15 ml. bottle. It's sold as a disinfectant for contaminated water, and for washing salad vegatables, but lots of people take it for whatever CS is used for.
I like to take the little bottles with me when I travel to Africa or Southern Asia, or wherever water tends not to be safe. Then you add drops to your drinking water. There's a caution though, that while it's called CS, it seems to be made chemically, and not by electrolysis. In the U.S., one can purchase Silverdyne, though it's a lot more expensive. Still, it can be well worth it, especially where topical applications are involved. _________________________________________________________________ Windows Live™ Contacts: Organize your contact list. http://windowslive.com/connect/post/marcusatmicrosoft.spaces.live.com-Blog-cns!503D1D86EBB2B53C!2285.entry?ocid=TXT_TAGLM_WL_UGC_Contacts_032009
