What are the best Squirrel Buster feeders for Sunflower hearts?

We do not recommend sunflower hearts for our bigger feeders. Due to their high oil content they tend to clog up the feeders, but they are perfect for use on a patio or balcony in one of our smaller feeders like the Squirrel Buster® Mini or Squirrel Buster® Standard. It is a good idea not to offer more than a couple of days worth of food at a time due to the risk of spoiling.