I buy unsalted raw peanuts and unsalted roasted peanuts. I have a large crew of squirrels and chipmunks that stop by daily for treats. They also eat sunflower seeds that I put out for them.
In this video I am sitting out on the porch steps throwing peanuts to the locals. There were only a handful of squirrels and 3 chipmunks, I see up to 15 squirrels some times. There are usually a few white squirrels that show up daily.