Prions are in the soil and attach to grass and other forage plants. The only problem with supplemental feeding is bringing deer together. Corn by itself does not cause CWD. The prions are already present in the soil and plants. As far Ias the saliva and feces are concerned, deer do that naturally, not just at a feeding site. They do not know how it came about. They still have not dicovered any biological or chemical way to kill the prions.

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