If the wind can blow it around it will waste a lot of corn. You should be able to tell from any new deer sign if they ate it or not.
In east Texas we use what's called "pipe feeders" 4in. PVC strapped to a tree and it is not uncommon at all for the deer to eat 50lbs in 2 or 3 days (when they are on it good). We use electric feeders also but have killed many more deer over the pipe feeders. The deer just seen to fear them less...

TO FAVORABLE WINDS GOOD HUNTING FRIENDS.... FLETCH