Concentrating deer at particular sites can speed up the spread of disease. Deer cannot be vaccinated against CWD, so adding vaccine to a bait is not an option or solution.
Infected deer can spread the prions that cause CWD throughout the landscape. CWD prions trigger abnormal reactions in brain cells of deer, elk, and other cervids. Prions are highly resistant to destruction and normal means of disinfection do not destroy prions. Prions can survive on the landscape for years, therefore it is important not to congregate animals and increase the concentration of prions because the risk of transmission to other animals increases.
The best way to stop the spread of prions is keeping infected deer contained and minimizing concentrations of animals. Prohibited baiting includes putting out grains, minerals, and salt. Scents and deer urine-based products used in hunting will still be allowed.