Do a search on the WI DNR website to read about CWD. WI was unprepared and is now paying the price. What started out asa few deer has spread to 1/3 of the state and now crossed into IL. The MI DNR is being proactive and trying to stop the spread before it gets a foothold. The disease is spread through saliva and mucous membranes. Any attractant that causes deer to congregate is a potential carrier of the disease whether it is a pile of corn to a salt block.