I totally quit feeding corn many years ago. Other ways are overall better, cheaper, and easier, without the aflaxtoxin poisoning risk.
Aflatoxin suppresses the immune system, which can cause deer to become much more susceptible to disease outbreak, or just catching a cold, becoming weak, and more easily caught by a dog or coyote. And when corn is fed during the spring/summer months, a buck's consumption of corn can stunt antler growth because any low-protein corn consumed may take away from the high-protein other food sources that buck might have consumed more (such as natural ragweed, clover, and other forbs).
Note: Corn is high in carbs (great in winter); but protein is needed more during the spring/summer months.
http://www.fda.gov/Safety/Recalls/ucm352796.htm
http://www.jwildlifedis.org/content/31/4/570.full.pdf
Aflaxtoxin poisoning implications to turkey and quail
http://texnat.tamu.edu/files/2010/09/page26.pdf