From the Natures Variety website:
Montmorillonite is a clay that is primarily colloidal silicate, which contains over 50 ultra-trace mineral compounds. Feed studies by the Veterinary Medical Diagnostics Laboratory at Texas A&M University have shown that Montmorillonite clays can sequester (bind) aflatoxins contained in grains and oilseeds.
I've also read before that it has healing properties because it is very rich in nutrients.
I question it's absorbtion ability into the body, but i'm sure it's completely safe in the digestive system. In theory, a dog would consume and absorb the nutrients in the clay, and then the remainder of the used clay would be excreted.
Kinda of like sucking an orange slice and then tossing the used up portion in the trash.
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