I grew sick and tired of cheap birdseed.Its mostly millit and the birds just shove it onto the ground.
The squirrel proof feeder on the deck gets a mix of peanut and sunflower seeds that have been chopped. I also add a Woodpecker mix of nuts and berries. There is no waste or shells to clean up in spring.
The feeder over the woodpile gets cracked corn,squirrels think they are really getting a treat.