I found them online. Just do a search for LL magnetic clay, biochelat and dr vinograd footpads. Dr Vinograd used to post here. You can buy the biochelat from the same sites that carry the magnetic clay. It worked for me because I got rid of the mercury from my mercury fillings and from handling mercury from broken thermometers. They do remove heavy metals and all other toxins from your body and you get visible proof. I was hypo for only three years.