I don't really have a problem at home but do on my shoot, they chew the pheasant feeders and cause damage to the pens, it's just what they do ! They would rather chew the feeders for fun as there is food all over the floor if they want it.
To be honest I just shoot them.
You could just feed twice a day, just enough for you chucks to clean up, then you could leave the door open and if the got in they would learn there's nothing there.