Birds love the taste—Squirrels don't. Hot Pepper acts as a natural squirrel deterrent in this suet cake. Attracts these colorful songbirds: Cardinals, Chickadees, Goldfinches, Juncos, Kinglets, Nuthatches, Purple Finches, Siskens, Tanagers, Thrushes, Titmice, Warblers, Woodpeckers and Wrens.