try a different variety, like peanut or persimmon flavored.
This ^
Deer will walk over corn to get to persimmon or peanut butter flavored rice bran. Well worth the extra $2 per bag
As others have said, if it gets rained on it turns into a rice crispy treat.. I had to shovel a pile up last year to satisfy Mr Green Jeans. It looked like dirt, but was about a 2" thick patty
