I also have trouble getting deer to eat anything but corn from my backyard feeder.

I tried soybeans, and several brands of deer feed.

I have a problem with the feed getting wet after it lays on the ground.

They really go after that corn. I tried mixing the corn about 3 to 1 with the soy beans and feed at various times. As stated above, they root through the other stuff to get the corn.

The soybeans or deer feed just pile up under the feeder.