Safflower has become one of our best selling seed types. While feeding your songbirds it keeps pesky birds like Starlings and Grackles to a minimum. It’s hard oddly shaped shell makes it nearly impossible for Starlings and Grackles to crack open yet easily opened by the songbirds. Safflower will also do a better than average job of keeping squirrels from taking over your feeders. Results can vary with squirrels but based on sales and customer feedback we can safely say Safflower works well for most.